Website build Hono-Website-Declarative-Pipeline-242

Signed-off-by: Hono Bot <hono-bot@eclipse.org>
diff --git a/docs/1.5/404.html b/docs/1.5/404.html
index ef7af50..64d5847 100644
--- a/docs/1.5/404.html
+++ b/docs/1.5/404.html
@@ -18,15 +18,15 @@
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-      <link href="/hono/docs/css/theme-hono.css?1621473404" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1621559518" rel="stylesheet">
     
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index 329a430..725a47f 100644
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     <title>AMQP Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
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+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
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     <script>
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index fe3aa2b..3429d61 100644
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@@ -21,21 +21,21 @@
     <title>AMQP 1.0 Messaging Network Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
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-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
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+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/amqp-network-config/">stable (1.7)</option>
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@@ -1526,6 +1558,8 @@
                   
               
                   
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                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/amqp-network-config/">1.3</option>
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                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/amqp-network-config/">1.2</option>
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                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/amqp-network-config/">1.1</option>
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                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/amqp-network-config/">dev</option>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
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+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
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diff --git a/docs/1.5/admin-guide/auth-server-config/index.html b/docs/1.5/admin-guide/auth-server-config/index.html
index d1b5403..76e8171 100644
--- a/docs/1.5/admin-guide/auth-server-config/index.html
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@@ -21,21 +21,21 @@
     <title>Auth Server Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
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-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
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@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
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@@ -1498,7 +1498,39 @@
                   
                     
                     
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+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/auth-server-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/auth-server-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/auth-server-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/auth-server-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/auth-server-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/auth-server-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/auth-server-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/auth-server-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/auth-server-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/auth-server-config/">dev</option>
@@ -3116,19 +3166,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/coap-adapter-config/index.html b/docs/1.5/admin-guide/coap-adapter-config/index.html
index 61a7bcf..6b151b3 100644
--- a/docs/1.5/admin-guide/coap-adapter-config/index.html
+++ b/docs/1.5/admin-guide/coap-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>CoAP Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/coap-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/coap-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/coap-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/coap-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/coap-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/coap-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/coap-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/coap-adapter-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/coap-adapter-config/">dev</option>
@@ -3089,19 +3133,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/command-router-config/index.html b/docs/1.5/admin-guide/command-router-config/index.html
index 4c61479..84e7e63 100644
--- a/docs/1.5/admin-guide/command-router-config/index.html
+++ b/docs/1.5/admin-guide/command-router-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Command Router Service :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/command-router-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/command-router-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/command-router-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/command-router-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/command-router-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/command-router-config/" selected>1.5</option>
@@ -1626,6 +1664,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/command-router-config/">dev</option>
@@ -3089,19 +3129,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
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diff --git a/docs/1.5/admin-guide/common-config/index.html b/docs/1.5/admin-guide/common-config/index.html
index c591435..0172240 100644
--- a/docs/1.5/admin-guide/common-config/index.html
+++ b/docs/1.5/admin-guide/common-config/index.html
@@ -21,21 +21,21 @@
     <title>Common Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/common-config/">stable (1.7)</option>
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+                    
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+                  
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+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/common-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/common-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/common-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/common-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/common-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/common-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/common-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/common-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/common-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/common-config/">dev</option>
@@ -3209,19 +3259,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/device-connection-config/index.html b/docs/1.5/admin-guide/device-connection-config/index.html
index c1322f7..080f5f2 100644
--- a/docs/1.5/admin-guide/device-connection-config/index.html
+++ b/docs/1.5/admin-guide/device-connection-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Device Connection Service :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-connection-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-connection-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
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+              
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+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-connection-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-connection-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-connection-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-connection-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-connection-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-connection-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-connection-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-connection-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-connection-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-connection-config/">dev</option>
@@ -3223,19 +3273,19 @@
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     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/device-registry-config/index.html b/docs/1.5/admin-guide/device-registry-config/index.html
index 0a03c57..74378a0 100644
--- a/docs/1.5/admin-guide/device-registry-config/index.html
+++ b/docs/1.5/admin-guide/device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>Device Registry Configurations :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-registry-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-registry-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-registry-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-registry-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-registry-config/">dev</option>
@@ -2934,19 +2984,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/file-based-device-registry-config/index.html b/docs/1.5/admin-guide/file-based-device-registry-config/index.html
index 23a96ec..e9e6207 100644
--- a/docs/1.5/admin-guide/file-based-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/file-based-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>File Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/file-based-device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/file-based-device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/file-based-device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/file-based-device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/file-based-device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/file-based-device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/file-based-device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/file-based-device-registry-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/file-based-device-registry-config/">dev</option>
@@ -3357,19 +3401,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/hono-client-configuration/index.html b/docs/1.5/admin-guide/hono-client-configuration/index.html
index 74f3428..0ee61d7 100644
--- a/docs/1.5/admin-guide/hono-client-configuration/index.html
+++ b/docs/1.5/admin-guide/hono-client-configuration/index.html
@@ -21,21 +21,21 @@
     <title>Hono Client Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-client-configuration/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-client-configuration/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/hono-client-configuration/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-client-configuration/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/hono-client-configuration/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/hono-client-configuration/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/hono-client-configuration/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/hono-client-configuration/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/hono-client-configuration/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/hono-client-configuration/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/hono-client-configuration/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/hono-client-configuration/">dev</option>
@@ -3224,19 +3274,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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     </script>
diff --git a/docs/1.5/admin-guide/http-adapter-config/index.html b/docs/1.5/admin-guide/http-adapter-config/index.html
index f97da0a..c889ad5 100644
--- a/docs/1.5/admin-guide/http-adapter-config/index.html
+++ b/docs/1.5/admin-guide/http-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>HTTP Adapter Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/http-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/http-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/http-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/http-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/http-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/http-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/http-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/http-adapter-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/http-adapter-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/http-adapter-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/http-adapter-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/http-adapter-config/">dev</option>
@@ -3108,19 +3158,19 @@
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-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
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+    <script src="/hono/docs/js/learn.js?1621559517"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
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index 46bb4c9..37bd8c8 100644
--- a/docs/1.5/admin-guide/index.html
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
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-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
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-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/">stable (1.8)</option>
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@@ -1706,6 +1750,8 @@
                   
               
                   
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@@ -1736,6 +1782,8 @@
                   
               
                   
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
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index e294beb..956d24f 100644
--- a/docs/1.5/admin-guide/jdbc-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/jdbc-device-registry-config/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
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 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
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+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/jdbc-device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/jdbc-device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
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+              
+                  
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+              
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+              
+                  
+              
+                  
+              
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+              
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+                    
+                    
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@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/jdbc-device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/jdbc-device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/jdbc-device-registry-config/" selected>1.5</option>
@@ -1626,6 +1664,8 @@
                   
               
                   
+              
+                  
                     
                     
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-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
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index a5a2710..ae15562 100644
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+++ b/docs/1.5/admin-guide/kura-adapter-config/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
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@@ -83,14 +83,14 @@
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
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@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/kura-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/kura-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
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+              
+                  
+              
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+              
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+              
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+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/kura-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/kura-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/kura-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/kura-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/kura-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/kura-adapter-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/kura-adapter-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/kura-adapter-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/kura-adapter-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/kura-adapter-config/">dev</option>
@@ -3133,19 +3183,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/mongodb-device-registry-config/index.html b/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
index 0eb0731..97a3a59 100644
--- a/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
+++ b/docs/1.5/admin-guide/mongodb-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>MongoDB Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mongodb-device-registry-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mongodb-device-registry-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/mongodb-device-registry-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mongodb-device-registry-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mongodb-device-registry-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mongodb-device-registry-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mongodb-device-registry-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mongodb-device-registry-config/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mongodb-device-registry-config/">dev</option>
@@ -3173,19 +3217,19 @@
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     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
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diff --git a/docs/1.5/admin-guide/monitoring-tracing-config/index.html b/docs/1.5/admin-guide/monitoring-tracing-config/index.html
index fda73ea..653f876 100644
--- a/docs/1.5/admin-guide/monitoring-tracing-config/index.html
+++ b/docs/1.5/admin-guide/monitoring-tracing-config/index.html
@@ -21,21 +21,21 @@
     <title>Monitoring & Tracing :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/monitoring-tracing-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/monitoring-tracing-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/monitoring-tracing-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/monitoring-tracing-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/monitoring-tracing-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/monitoring-tracing-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/monitoring-tracing-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/monitoring-tracing-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/monitoring-tracing-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/monitoring-tracing-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/monitoring-tracing-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/monitoring-tracing-config/">dev</option>
@@ -3096,19 +3146,19 @@
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     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/admin-guide/mqtt-adapter-config/index.html b/docs/1.5/admin-guide/mqtt-adapter-config/index.html
index b01f0e2..61d0782 100644
--- a/docs/1.5/admin-guide/mqtt-adapter-config/index.html
+++ b/docs/1.5/admin-guide/mqtt-adapter-config/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mqtt-adapter-config/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/mqtt-adapter-config/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/mqtt-adapter-config/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mqtt-adapter-config/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mqtt-adapter-config/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mqtt-adapter-config/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mqtt-adapter-config/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mqtt-adapter-config/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/mqtt-adapter-config/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/mqtt-adapter-config/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/mqtt-adapter-config/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mqtt-adapter-config/">dev</option>
@@ -3188,19 +3238,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/admin-guide/secure_communication/index.html b/docs/1.5/admin-guide/secure_communication/index.html
index 6577f98..f05eef2 100644
--- a/docs/1.5/admin-guide/secure_communication/index.html
+++ b/docs/1.5/admin-guide/secure_communication/index.html
@@ -21,21 +21,21 @@
     <title>Secure Communication :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/secure_communication/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/secure_communication/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/secure_communication/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/secure_communication/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/secure_communication/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/secure_communication/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/secure_communication/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/secure_communication/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/secure_communication/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/secure_communication/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/secure_communication/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/secure_communication/">dev</option>
@@ -3231,19 +3281,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/authentication/index.html b/docs/1.5/api/authentication/index.html
index c3de223..b906eec 100644
--- a/docs/1.5/api/authentication/index.html
+++ b/docs/1.5/api/authentication/index.html
@@ -21,21 +21,21 @@
     <title>Authentication API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/authentication/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/authentication/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/authentication/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/authentication/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/authentication/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/authentication/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/authentication/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/authentication/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/authentication/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/authentication/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/authentication/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/authentication/">dev</option>
@@ -3061,19 +3111,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/command-and-control/index.html b/docs/1.5/api/command-and-control/index.html
index d278462..66c1f43 100644
--- a/docs/1.5/api/command-and-control/index.html
+++ b/docs/1.5/api/command-and-control/index.html
@@ -21,21 +21,21 @@
     <title>Command & Control API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/command-and-control/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/command-and-control/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/command-and-control/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/command-and-control/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/command-and-control/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/command-and-control/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/command-and-control/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/command-and-control/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/command-and-control/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/command-and-control/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/command-and-control/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/command-and-control/">dev</option>
@@ -3245,19 +3295,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/command-router/index.html b/docs/1.5/api/command-router/index.html
index 2913b60..b8dbc5d 100644
--- a/docs/1.5/api/command-router/index.html
+++ b/docs/1.5/api/command-router/index.html
@@ -21,21 +21,21 @@
     <title>Command Router API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/command-router/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/command-router/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/command-router/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/command-router/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/command-router/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/command-router/" selected>1.5</option>
@@ -1626,6 +1664,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/command-router/">dev</option>
@@ -3139,19 +3179,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/credentials/index.html b/docs/1.5/api/credentials/index.html
index 5d056d6..05005de 100644
--- a/docs/1.5/api/credentials/index.html
+++ b/docs/1.5/api/credentials/index.html
@@ -21,21 +21,21 @@
     <title>Credentials API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/credentials/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/credentials/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/credentials/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/credentials/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/credentials/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/credentials/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/credentials/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/credentials/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/credentials/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/credentials/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/credentials/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/credentials/">dev</option>
@@ -3475,19 +3525,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/device-connection/index.html b/docs/1.5/api/device-connection/index.html
index 92e6e04..ef35566 100644
--- a/docs/1.5/api/device-connection/index.html
+++ b/docs/1.5/api/device-connection/index.html
@@ -21,21 +21,21 @@
     <title>Device Connection API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/device-connection/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/device-connection/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/device-connection/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/device-connection/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/device-connection/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/device-connection/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/device-connection/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/device-connection/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/device-connection/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/device-connection/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/device-connection/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/device-connection/">dev</option>
@@ -3572,19 +3622,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/device-registration/index.html b/docs/1.5/api/device-registration/index.html
index dca4529..85d272b 100644
--- a/docs/1.5/api/device-registration/index.html
+++ b/docs/1.5/api/device-registration/index.html
@@ -21,21 +21,21 @@
     <title>Device Registration API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/device-registration/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/device-registration/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/device-registration/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/device-registration/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/device-registration/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/device-registration/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/device-registration/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/device-registration/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/device-registration/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/device-registration/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/device-registration/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/device-registration/">dev</option>
@@ -3161,19 +3211,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/event/index.html b/docs/1.5/api/event/index.html
index cec0ac1..e53a77b 100644
--- a/docs/1.5/api/event/index.html
+++ b/docs/1.5/api/event/index.html
@@ -21,21 +21,21 @@
     <title>Event API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/event/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/event/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/event/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/event/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/event/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/event/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/event/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/event/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/event/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/event/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/event/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/event/">dev</option>
@@ -3127,19 +3177,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/index.html b/docs/1.5/api/index.html
index 06db809..6b98ddb 100644
--- a/docs/1.5/api/index.html
+++ b/docs/1.5/api/index.html
@@ -21,21 +21,21 @@
     <title>API :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/">dev</option>
@@ -2921,19 +2971,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/management/index.html b/docs/1.5/api/management/index.html
index 39a91d3..81445c6 100644
--- a/docs/1.5/api/management/index.html
+++ b/docs/1.5/api/management/index.html
@@ -21,21 +21,21 @@
     <title>Device Registry Management API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -86,14 +86,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1501,7 +1501,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/management/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/management/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/management/">1.8</option>
                     
                   
               
@@ -1529,6 +1561,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/management/">1.7</option>
@@ -1559,6 +1593,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/management/">1.6</option>
@@ -1589,6 +1625,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/management/" selected>1.5</option>
@@ -1619,6 +1657,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/management/">1.4</option>
@@ -1649,6 +1689,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/management/">1.3</option>
@@ -1679,6 +1721,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/management/">1.2</option>
@@ -1709,6 +1753,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/management/">1.1</option>
@@ -1739,6 +1785,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/management/">1.0</option>
@@ -1769,6 +1817,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/management/">dev</option>
@@ -2982,19 +3032,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/metrics/index.html b/docs/1.5/api/metrics/index.html
index c34c4b9..d7f9194 100644
--- a/docs/1.5/api/metrics/index.html
+++ b/docs/1.5/api/metrics/index.html
@@ -21,21 +21,21 @@
     <title>Metrics :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/metrics/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/metrics/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/metrics/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/metrics/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/metrics/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/metrics/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/metrics/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/metrics/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/metrics/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/metrics/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/metrics/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/metrics/">dev</option>
@@ -3203,19 +3253,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/telemetry/index.html b/docs/1.5/api/telemetry/index.html
index c8cd748..9f96369 100644
--- a/docs/1.5/api/telemetry/index.html
+++ b/docs/1.5/api/telemetry/index.html
@@ -21,21 +21,21 @@
     <title>Telemetry API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/telemetry/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/telemetry/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/telemetry/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/telemetry/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/telemetry/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/telemetry/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/telemetry/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/telemetry/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/telemetry/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/telemetry/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/telemetry/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/telemetry/">dev</option>
@@ -3098,19 +3148,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/api/tenant/index.html b/docs/1.5/api/tenant/index.html
index 159aa00..d63514d 100644
--- a/docs/1.5/api/tenant/index.html
+++ b/docs/1.5/api/tenant/index.html
@@ -21,21 +21,21 @@
     <title>Tenant API Specification :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/tenant/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/tenant/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/tenant/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/tenant/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/tenant/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/tenant/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/tenant/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/tenant/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/tenant/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/tenant/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/tenant/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/tenant/">dev</option>
@@ -3548,19 +3598,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/architecture/auth/index.html b/docs/1.5/architecture/auth/index.html
index 2209f86..6940218 100644
--- a/docs/1.5/architecture/auth/index.html
+++ b/docs/1.5/architecture/auth/index.html
@@ -21,21 +21,21 @@
     <title>Authentication/Authorization :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
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+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
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@@ -83,14 +83,14 @@
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
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+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/auth/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/auth/">stable (1.8)</option>
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+                  
+              
+          
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+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/architecture/auth/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/auth/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/auth/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/auth/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/auth/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/auth/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/auth/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/auth/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/auth/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/auth/">dev</option>
@@ -2976,19 +3026,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/architecture/component-view/index.html b/docs/1.5/architecture/component-view/index.html
index 3463d9f..2d8c9d0 100644
--- a/docs/1.5/architecture/component-view/index.html
+++ b/docs/1.5/architecture/component-view/index.html
@@ -21,21 +21,21 @@
     <title>Component View :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/component-view/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/component-view/">stable (1.8)</option>
+                    
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+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
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+              
+                  
+              
+                  
+              
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+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/architecture/component-view/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/component-view/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/component-view/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/component-view/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/component-view/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/component-view/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/component-view/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/component-view/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/component-view/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/component-view/">dev</option>
@@ -2979,19 +3029,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
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diff --git a/docs/1.5/architecture/index.html b/docs/1.5/architecture/index.html
index 9ba0597..b8bba20 100644
--- a/docs/1.5/architecture/index.html
+++ b/docs/1.5/architecture/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559518" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559518" rel="stylesheet">
     
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-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559518"></script>
 
     <style>
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@@ -83,14 +83,14 @@
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 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559518"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559518"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559518"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/architecture/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/architecture/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/">dev</option>
@@ -2920,19 +2970,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
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+    <script src="/hono/docs/js/learn.js?1621559518"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
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index 3ab4efb..624d234 100644
--- a/docs/1.5/categories/index.html
+++ b/docs/1.5/categories/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
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 <script type="text/javascript">
     
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+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/categories/">stable (1.7)</option>
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+              
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+              
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+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/categories/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/categories/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/categories/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/categories/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/categories/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/categories/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/categories/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/categories/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/categories/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/categories/">dev</option>
@@ -2917,19 +2967,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
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-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
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diff --git a/docs/1.5/concepts/command-and-control/index.html b/docs/1.5/concepts/command-and-control/index.html
index 580e771..6534e51 100644
--- a/docs/1.5/concepts/command-and-control/index.html
+++ b/docs/1.5/concepts/command-and-control/index.html
@@ -21,21 +21,21 @@
     <title>Command & Control :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/command-and-control/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/command-and-control/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
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+              
+                  
+              
+                  
+              
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+              
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+                  
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+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/command-and-control/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/command-and-control/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/command-and-control/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/command-and-control/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/command-and-control/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/command-and-control/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/command-and-control/">dev</option>
@@ -2998,19 +3042,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473402"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473402"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473402"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473402"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473402"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473402"></script>
-    <script src="/hono/docs/js/learn.js?1621473402"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473402"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473402" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473402"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/concepts/connecting-devices/index.html b/docs/1.5/concepts/connecting-devices/index.html
index 9118083..e23bb04 100644
--- a/docs/1.5/concepts/connecting-devices/index.html
+++ b/docs/1.5/concepts/connecting-devices/index.html
@@ -21,21 +21,21 @@
     <title>Connecting Devices :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559516" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559516" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559516" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559516"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559516"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559516"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559516"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/connecting-devices/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/connecting-devices/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/connecting-devices/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/connecting-devices/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/connecting-devices/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/connecting-devices/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/connecting-devices/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/connecting-devices/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/connecting-devices/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/connecting-devices/">1.1</option>
@@ -1738,6 +1784,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/connecting-devices/">dev</option>
@@ -3035,19 +3083,19 @@
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     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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     </script>
diff --git a/docs/1.5/concepts/connection-events/index.html b/docs/1.5/concepts/connection-events/index.html
index 0d5da04..530c2df 100644
--- a/docs/1.5/concepts/connection-events/index.html
+++ b/docs/1.5/concepts/connection-events/index.html
@@ -21,21 +21,21 @@
     <title>Connection Events :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/connection-events/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/connection-events/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/connection-events/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/connection-events/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/connection-events/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/connection-events/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/connection-events/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/connection-events/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/connection-events/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/connection-events/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/connection-events/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/connection-events/">dev</option>
@@ -2955,19 +3005,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/concepts/device-identity/index.html b/docs/1.5/concepts/device-identity/index.html
index 19bab2c..2f6de93 100644
--- a/docs/1.5/concepts/device-identity/index.html
+++ b/docs/1.5/concepts/device-identity/index.html
@@ -21,21 +21,21 @@
     <title>Device Identity :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-identity/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-identity/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/device-identity/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-identity/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-identity/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-identity/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-identity/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-identity/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/device-identity/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/device-identity/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/device-identity/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-identity/">dev</option>
@@ -2959,19 +3009,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/concepts/device-notifications/index.html b/docs/1.5/concepts/device-notifications/index.html
index cba8657..c9809e7 100644
--- a/docs/1.5/concepts/device-notifications/index.html
+++ b/docs/1.5/concepts/device-notifications/index.html
@@ -21,21 +21,21 @@
     <title>Device Notifications :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-notifications/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-notifications/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/device-notifications/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-notifications/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-notifications/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-notifications/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-notifications/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-notifications/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-notifications/">dev</option>
@@ -2937,19 +2981,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
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-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/concepts/device-provisioning/index.html b/docs/1.5/concepts/device-provisioning/index.html
index cac5a80..1954546 100644
--- a/docs/1.5/concepts/device-provisioning/index.html
+++ b/docs/1.5/concepts/device-provisioning/index.html
@@ -21,21 +21,21 @@
     <title>Device Provisioning :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-provisioning/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/device-provisioning/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
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+              
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+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/device-provisioning/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-provisioning/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-provisioning/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-provisioning/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-provisioning/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-provisioning/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/device-provisioning/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/device-provisioning/">1.1</option>
@@ -1738,6 +1784,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-provisioning/">dev</option>
@@ -2972,19 +3020,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
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diff --git a/docs/1.5/concepts/index.html b/docs/1.5/concepts/index.html
index 47762a4..b8782b7 100644
--- a/docs/1.5/concepts/index.html
+++ b/docs/1.5/concepts/index.html
@@ -21,21 +21,21 @@
     <title>Concepts :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
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 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559518"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/">dev</option>
@@ -2917,19 +2967,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
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diff --git a/docs/1.5/concepts/resource-limits/index.html b/docs/1.5/concepts/resource-limits/index.html
index e4541a6..8b171a5 100644
--- a/docs/1.5/concepts/resource-limits/index.html
+++ b/docs/1.5/concepts/resource-limits/index.html
@@ -21,21 +21,21 @@
     <title>Resource limits :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/resource-limits/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/resource-limits/">stable (1.8)</option>
+                    
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+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/resource-limits/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/resource-limits/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/resource-limits/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/resource-limits/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/resource-limits/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/resource-limits/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/resource-limits/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/resource-limits/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/resource-limits/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/resource-limits/">dev</option>
@@ -2993,19 +3043,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/concepts/tenancy/index.html b/docs/1.5/concepts/tenancy/index.html
index 2162721..fea74c9 100644
--- a/docs/1.5/concepts/tenancy/index.html
+++ b/docs/1.5/concepts/tenancy/index.html
@@ -21,21 +21,21 @@
     <title>Multi-Tenancy :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473402"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473402"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/tenancy/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/concepts/tenancy/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/tenancy/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/tenancy/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/tenancy/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/tenancy/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/tenancy/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/tenancy/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/tenancy/">dev</option>
@@ -2958,19 +3002,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/deployment/create-kubernetes-cluster/index.html b/docs/1.5/deployment/create-kubernetes-cluster/index.html
index 5784762..6e0f163 100644
--- a/docs/1.5/deployment/create-kubernetes-cluster/index.html
+++ b/docs/1.5/deployment/create-kubernetes-cluster/index.html
@@ -21,21 +21,21 @@
     <title>Setting up a Kubernetes Cluster :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/create-kubernetes-cluster/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/create-kubernetes-cluster/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/deployment/create-kubernetes-cluster/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/create-kubernetes-cluster/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/create-kubernetes-cluster/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/create-kubernetes-cluster/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/create-kubernetes-cluster/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/create-kubernetes-cluster/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/create-kubernetes-cluster/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/create-kubernetes-cluster/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/create-kubernetes-cluster/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/create-kubernetes-cluster/">dev</option>
@@ -3047,19 +3097,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473404"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473404"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473404"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473404"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473404"></script>
-    <script src="/hono/docs/js/learn.js?1621473404"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473404"></script>
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+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473404" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473404"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/deployment/helm-based-deployment/index.html b/docs/1.5/deployment/helm-based-deployment/index.html
index 70d3c17..347b699 100644
--- a/docs/1.5/deployment/helm-based-deployment/index.html
+++ b/docs/1.5/deployment/helm-based-deployment/index.html
@@ -21,21 +21,21 @@
     <title>Helm based Deployment :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473402" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473402" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473402"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/helm-based-deployment/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/helm-based-deployment/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/deployment/helm-based-deployment/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/helm-based-deployment/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/helm-based-deployment/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/helm-based-deployment/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/helm-based-deployment/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/helm-based-deployment/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/helm-based-deployment/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/helm-based-deployment/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/helm-based-deployment/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/helm-based-deployment/">dev</option>
@@ -3094,19 +3144,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473404"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473404"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473404"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473404"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473404"></script>
-    <script src="/hono/docs/js/learn.js?1621473404"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473404"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473404" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473404"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/deployment/index.html b/docs/1.5/deployment/index.html
index 6fd6fab..2cf8585 100644
--- a/docs/1.5/deployment/index.html
+++ b/docs/1.5/deployment/index.html
@@ -21,21 +21,21 @@
     <title>Deployment :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/deployment/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/">dev</option>
@@ -2920,19 +2970,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/deployment/openshift/index.html b/docs/1.5/deployment/openshift/index.html
index b184a59..3a7ecfd 100644
--- a/docs/1.5/deployment/openshift/index.html
+++ b/docs/1.5/deployment/openshift/index.html
@@ -21,21 +21,21 @@
     <title>OpenShift / OKD :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/openshift/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/openshift/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/deployment/openshift/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/openshift/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/openshift/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/openshift/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/openshift/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/openshift/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/openshift/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/openshift/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/openshift/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/openshift/">dev</option>
@@ -2941,19 +2991,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/deployment/resource-limitation/index.html b/docs/1.5/deployment/resource-limitation/index.html
index bafd466..706e57e 100644
--- a/docs/1.5/deployment/resource-limitation/index.html
+++ b/docs/1.5/deployment/resource-limitation/index.html
@@ -21,21 +21,21 @@
     <title>Limiting Resource Usage :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/resource-limitation/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/resource-limitation/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/deployment/resource-limitation/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/resource-limitation/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/resource-limitation/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/resource-limitation/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/resource-limitation/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/resource-limitation/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/resource-limitation/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/resource-limitation/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/resource-limitation/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/resource-limitation/">dev</option>
@@ -3004,19 +3054,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/dev-guide/amqp_adapter_client/index.html b/docs/1.5/dev-guide/amqp_adapter_client/index.html
index 4d015a3..67866a3 100644
--- a/docs/1.5/dev-guide/amqp_adapter_client/index.html
+++ b/docs/1.5/dev-guide/amqp_adapter_client/index.html
@@ -21,21 +21,21 @@
     <title>AMQP Adapter Client for Java :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/amqp_adapter_client/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/amqp_adapter_client/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/dev-guide/amqp_adapter_client/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/amqp_adapter_client/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/amqp_adapter_client/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/amqp_adapter_client/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/amqp_adapter_client/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/amqp_adapter_client/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/amqp_adapter_client/">1.2</option>
@@ -1710,6 +1754,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/amqp_adapter_client/">dev</option>
@@ -2919,19 +2965,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/dev-guide/building_hono/index.html b/docs/1.5/dev-guide/building_hono/index.html
index 83910c9..9e4193e 100644
--- a/docs/1.5/dev-guide/building_hono/index.html
+++ b/docs/1.5/dev-guide/building_hono/index.html
@@ -21,21 +21,21 @@
     <title>Building from Source :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/building_hono/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/building_hono/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/dev-guide/building_hono/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/building_hono/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/building_hono/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/building_hono/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/building_hono/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/building_hono/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/building_hono/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/building_hono/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/building_hono/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/building_hono/">dev</option>
@@ -3004,19 +3054,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/dev-guide/custom_http_adapter/index.html b/docs/1.5/dev-guide/custom_http_adapter/index.html
index 56064df..01d66d1 100644
--- a/docs/1.5/dev-guide/custom_http_adapter/index.html
+++ b/docs/1.5/dev-guide/custom_http_adapter/index.html
@@ -21,21 +21,21 @@
     <title>Implement a Custom Hono HTTP Protocol Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/custom_http_adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/custom_http_adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/dev-guide/custom_http_adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/custom_http_adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/custom_http_adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/custom_http_adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/custom_http_adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/custom_http_adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/custom_http_adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/custom_http_adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/custom_http_adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/custom_http_adapter/">dev</option>
@@ -3014,19 +3064,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/dev-guide/index.html b/docs/1.5/dev-guide/index.html
index 0d43f01..1a1da9d 100644
--- a/docs/1.5/dev-guide/index.html
+++ b/docs/1.5/dev-guide/index.html
@@ -21,21 +21,21 @@
     <title>Developer Guide :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/dev-guide/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/">dev</option>
@@ -2920,19 +2970,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/dev-guide/java_client_consumer/index.html b/docs/1.5/dev-guide/java_client_consumer/index.html
index 046f353..8b19b62 100644
--- a/docs/1.5/dev-guide/java_client_consumer/index.html
+++ b/docs/1.5/dev-guide/java_client_consumer/index.html
@@ -21,21 +21,21 @@
     <title>Consuming Messages from Java :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/java_client_consumer/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/java_client_consumer/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/dev-guide/java_client_consumer/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/java_client_consumer/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/java_client_consumer/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/java_client_consumer/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/java_client_consumer/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/java_client_consumer/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/java_client_consumer/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/java_client_consumer/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/java_client_consumer/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/java_client_consumer/">dev</option>
@@ -2989,19 +3039,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/index.html b/docs/1.5/index.html
index 7a27330..0f753ea 100644
--- a/docs/1.5/index.html
+++ b/docs/1.5/index.html
@@ -21,21 +21,21 @@
     <title>Documentation :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/">dev</option>
@@ -2868,19 +2918,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/sitemap.xml b/docs/1.5/sitemap.xml
index e1f66f4..3c5b4ca 100644
--- a/docs/1.5/sitemap.xml
+++ b/docs/1.5/sitemap.xml
@@ -10,6 +10,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/"
                 />
@@ -62,6 +67,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/"
                 />
@@ -114,6 +124,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/device-identity/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/device-identity/"
                 />
@@ -166,6 +181,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/tenancy/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/tenancy/"
                 />
@@ -203,6 +223,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/device-provisioning/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/device-provisioning/"
                 />
@@ -250,6 +275,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/connecting-devices/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/connecting-devices/"
                 />
@@ -297,6 +327,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/device-notifications/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/device-notifications/"
                 />
@@ -334,6 +369,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/command-and-control/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/command-and-control/"
                 />
@@ -371,6 +411,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/resource-limits/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/resource-limits/"
                 />
@@ -423,6 +468,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/concepts/connection-events/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/concepts/connection-events/"
                 />
@@ -475,6 +525,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/"
                 />
@@ -527,6 +582,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/mongodb-based-device-registry/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/mongodb-based-device-registry/"
                 />
@@ -564,6 +624,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/file-based-device-registry/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/file-based-device-registry/"
                 />
@@ -601,6 +666,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/http-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/http-adapter/"
                 />
@@ -653,6 +723,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/mqtt-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/mqtt-adapter/"
                 />
@@ -705,6 +780,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/amqp-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/amqp-adapter/"
                 />
@@ -757,6 +837,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/coap-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/coap-adapter/"
                 />
@@ -799,6 +884,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/kura-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/kura-adapter/"
                 />
@@ -851,6 +941,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/sigfox-adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/sigfox-adapter/"
                 />
@@ -903,6 +998,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/"
                 />
@@ -955,6 +1055,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/common-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/common-config/"
                 />
@@ -1007,6 +1112,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/auth-server-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/auth-server-config/"
                 />
@@ -1059,6 +1169,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/jdbc-device-registry-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/jdbc-device-registry-config/"
                 />
@@ -1086,6 +1201,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/mongodb-device-registry-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/mongodb-device-registry-config/"
                 />
@@ -1123,6 +1243,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/file-based-device-registry-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/file-based-device-registry-config/"
                 />
@@ -1160,6 +1285,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/command-router-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/command-router-config/"
                 />
@@ -1187,6 +1317,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-connection-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-connection-config/"
                 />
@@ -1239,6 +1374,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/http-adapter-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/http-adapter-config/"
                 />
@@ -1291,6 +1431,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/mqtt-adapter-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/mqtt-adapter-config/"
                 />
@@ -1343,6 +1488,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/amqp-adapter-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/amqp-adapter-config/"
                 />
@@ -1395,6 +1545,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/coap-adapter-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/coap-adapter-config/"
                 />
@@ -1432,6 +1587,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/kura-adapter-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/kura-adapter-config/"
                 />
@@ -1484,6 +1644,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/hono-client-configuration/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-client-configuration/"
                 />
@@ -1536,6 +1701,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/amqp-network-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/amqp-network-config/"
                 />
@@ -1588,6 +1758,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/secure_communication/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/secure_communication/"
                 />
@@ -1640,6 +1815,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/monitoring-tracing-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/monitoring-tracing-config/"
                 />
@@ -1692,6 +1872,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/dev-guide/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/dev-guide/"
                 />
@@ -1744,6 +1929,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/dev-guide/building_hono/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/dev-guide/building_hono/"
                 />
@@ -1796,6 +1986,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/dev-guide/amqp_adapter_client/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/dev-guide/amqp_adapter_client/"
                 />
@@ -1838,6 +2033,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/dev-guide/java_client_consumer/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/dev-guide/java_client_consumer/"
                 />
@@ -1890,6 +2090,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/dev-guide/custom_http_adapter/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/dev-guide/custom_http_adapter/"
                 />
@@ -1942,6 +2147,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/"
                 />
@@ -1994,6 +2204,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/telemetry/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/telemetry/"
                 />
@@ -2046,6 +2261,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/event/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/event/"
                 />
@@ -2098,6 +2318,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/command-and-control/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/command-and-control/"
                 />
@@ -2150,6 +2375,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/tenant/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/tenant/"
                 />
@@ -2202,6 +2432,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/command-router/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/command-router/"
                 />
@@ -2229,6 +2464,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/device-connection/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/device-connection/"
                 />
@@ -2281,6 +2521,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/device-registration/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/device-registration/"
                 />
@@ -2333,6 +2578,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/credentials/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/credentials/"
                 />
@@ -2385,6 +2635,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/authentication/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/authentication/"
                 />
@@ -2437,6 +2692,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/management/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/management/"
                 />
@@ -2489,6 +2749,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/metrics/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/metrics/"
                 />
@@ -2541,6 +2806,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/deployment/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/deployment/"
                 />
@@ -2593,6 +2863,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/deployment/helm-based-deployment/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/deployment/helm-based-deployment/"
                 />
@@ -2645,6 +2920,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/deployment/openshift/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/deployment/openshift/"
                 />
@@ -2697,6 +2977,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/deployment/create-kubernetes-cluster/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/deployment/create-kubernetes-cluster/"
                 />
@@ -2749,6 +3034,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/deployment/resource-limitation/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/deployment/resource-limitation/"
                 />
@@ -2801,6 +3091,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/architecture/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/architecture/"
                 />
@@ -2853,6 +3148,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/architecture/component-view/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/architecture/component-view/"
                 />
@@ -2905,6 +3205,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/architecture/auth/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/architecture/auth/"
                 />
@@ -2957,6 +3262,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/categories/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/categories/"
                 />
@@ -3009,6 +3319,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/user-guide/device-registry/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/device-registry/"
                 />
@@ -3061,6 +3376,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/device-registry-config/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-registry-config/"
                 />
@@ -3113,6 +3433,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/tags/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/tags/"
                 />
diff --git a/docs/1.5/tags/index.html b/docs/1.5/tags/index.html
index 5074b94..cedf59c 100644
--- a/docs/1.5/tags/index.html
+++ b/docs/1.5/tags/index.html
@@ -21,21 +21,21 @@
     <title>Tags :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/tags/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/tags/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/tags/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/tags/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/tags/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/tags/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/tags/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/tags/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/tags/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/tags/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/tags/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/tags/">dev</option>
@@ -2917,19 +2967,19 @@
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       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
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diff --git a/docs/1.5/user-guide/amqp-adapter/index.html b/docs/1.5/user-guide/amqp-adapter/index.html
index 2c09aca..e08b6cb 100644
--- a/docs/1.5/user-guide/amqp-adapter/index.html
+++ b/docs/1.5/user-guide/amqp-adapter/index.html
@@ -21,21 +21,21 @@
     <title>AMQP Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/amqp-adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/amqp-adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/amqp-adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/amqp-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/amqp-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/amqp-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/amqp-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/amqp-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/amqp-adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/amqp-adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/amqp-adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/amqp-adapter/">dev</option>
@@ -3498,19 +3548,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/coap-adapter/index.html b/docs/1.5/user-guide/coap-adapter/index.html
index 30e8500..847c777 100644
--- a/docs/1.5/user-guide/coap-adapter/index.html
+++ b/docs/1.5/user-guide/coap-adapter/index.html
@@ -21,21 +21,21 @@
     <title>CoAP Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/coap-adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/coap-adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/coap-adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/coap-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/coap-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/coap-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/coap-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/coap-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/coap-adapter/">1.2</option>
@@ -1710,6 +1754,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/coap-adapter/">dev</option>
@@ -3679,19 +3725,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
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diff --git a/docs/1.5/user-guide/device-registry/index.html b/docs/1.5/user-guide/device-registry/index.html
index bb92f7c..a8626e5 100644
--- a/docs/1.5/user-guide/device-registry/index.html
+++ b/docs/1.5/user-guide/device-registry/index.html
@@ -21,21 +21,21 @@
     <title>Device Registries :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/device-registry/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/device-registry/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/device-registry/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/device-registry/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/device-registry/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/device-registry/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/device-registry/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/device-registry/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/device-registry/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/device-registry/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/device-registry/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/device-registry/">dev</option>
@@ -2933,19 +2983,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/file-based-device-registry/index.html b/docs/1.5/user-guide/file-based-device-registry/index.html
index eec844e..2572b7c 100644
--- a/docs/1.5/user-guide/file-based-device-registry/index.html
+++ b/docs/1.5/user-guide/file-based-device-registry/index.html
@@ -21,21 +21,21 @@
     <title>File Based Device Registry :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/file-based-device-registry/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/file-based-device-registry/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/file-based-device-registry/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/file-based-device-registry/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/file-based-device-registry/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/file-based-device-registry/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/file-based-device-registry/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/file-based-device-registry/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/file-based-device-registry/">dev</option>
@@ -2870,19 +2914,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559517"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559517"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559517"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559517"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559517"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559517"></script>
+    <script src="/hono/docs/js/learn.js?1621559517"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559517"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559517" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559517"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/http-adapter/index.html b/docs/1.5/user-guide/http-adapter/index.html
index 6c9ff49..99d1328 100644
--- a/docs/1.5/user-guide/http-adapter/index.html
+++ b/docs/1.5/user-guide/http-adapter/index.html
@@ -21,21 +21,21 @@
     <title>HTTP Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/http-adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/http-adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/http-adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/http-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/http-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/http-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/http-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/http-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/http-adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/http-adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/http-adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/http-adapter/">dev</option>
@@ -3623,19 +3673,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473404"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473404"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473404"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473404"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473404"></script>
-    <script src="/hono/docs/js/learn.js?1621473404"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473404"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473404" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473404"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/index.html b/docs/1.5/user-guide/index.html
index ef13815..0d72f46 100644
--- a/docs/1.5/user-guide/index.html
+++ b/docs/1.5/user-guide/index.html
@@ -21,21 +21,21 @@
     <title>User Guide :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
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-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
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-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
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index 3b51a4b..f6bccb6 100644
--- a/docs/1.5/user-guide/kura-adapter/index.html
+++ b/docs/1.5/user-guide/kura-adapter/index.html
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
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+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
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+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
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@@ -83,14 +83,14 @@
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 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
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+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/kura-adapter/">stable (1.7)</option>
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+                    
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+          
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@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/kura-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/kura-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
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                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/kura-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
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                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/kura-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/kura-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/kura-adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/kura-adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/kura-adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
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index 0dde752..446a341 100644
--- a/docs/1.5/user-guide/mongodb-based-device-registry/index.html
+++ b/docs/1.5/user-guide/mongodb-based-device-registry/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
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+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
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+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/mongodb-based-device-registry/">stable (1.7)</option>
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+                    
+                  
+              
+                  
+              
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+              
+                  
+              
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+              
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+              
+                  
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+              
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+              
+          
+              
+              
+                  
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+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/mongodb-based-device-registry/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/mongodb-based-device-registry/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/mongodb-based-device-registry/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/mongodb-based-device-registry/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/mongodb-based-device-registry/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/mongodb-based-device-registry/">1.3</option>
@@ -1682,6 +1724,8 @@
                   
               
                   
+              
+                  
                     
                     
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
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-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/mqtt-adapter/index.html b/docs/1.5/user-guide/mqtt-adapter/index.html
index 79b390a..8cf43e2 100644
--- a/docs/1.5/user-guide/mqtt-adapter/index.html
+++ b/docs/1.5/user-guide/mqtt-adapter/index.html
@@ -21,21 +21,21 @@
     <title>MQTT Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/mqtt-adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/mqtt-adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/mqtt-adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/mqtt-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/mqtt-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/mqtt-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/mqtt-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/mqtt-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/mqtt-adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/mqtt-adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/mqtt-adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/mqtt-adapter/">dev</option>
@@ -3376,19 +3426,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473404"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473404"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473404"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473404"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473404"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473404"></script>
-    <script src="/hono/docs/js/learn.js?1621473404"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473404"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473404" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473404"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.5/user-guide/sigfox-adapter/index.html b/docs/1.5/user-guide/sigfox-adapter/index.html
index f8a622f..e0f17b0 100644
--- a/docs/1.5/user-guide/sigfox-adapter/index.html
+++ b/docs/1.5/user-guide/sigfox-adapter/index.html
@@ -21,21 +21,21 @@
     <title>Sigfox Adapter :: Eclipse Hono&trade; Vers.: 1.5</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473403" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559517" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559517" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473403" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559517" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473403"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559517"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
-<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621473403"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559517"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559517"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.5";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473403"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559517"></script>
 
     
   </div>
@@ -1498,7 +1498,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/sigfox-adapter/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/sigfox-adapter/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/sigfox-adapter/">1.8</option>
                     
                   
               
@@ -1526,6 +1558,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/sigfox-adapter/">1.7</option>
@@ -1556,6 +1590,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/sigfox-adapter/">1.6</option>
@@ -1586,6 +1622,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/sigfox-adapter/" selected>1.5</option>
@@ -1616,6 +1654,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/sigfox-adapter/">1.4</option>
@@ -1646,6 +1686,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/sigfox-adapter/">1.3</option>
@@ -1676,6 +1718,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/sigfox-adapter/">1.2</option>
@@ -1706,6 +1750,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/sigfox-adapter/">1.1</option>
@@ -1736,6 +1782,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/sigfox-adapter/">1.0</option>
@@ -1766,6 +1814,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/sigfox-adapter/">dev</option>
@@ -3045,19 +3095,19 @@
     <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;">
       <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div>
     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473403"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473403"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473403"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473403"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473403"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559518"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559518"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559518"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559518"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559518"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473403"></script>
-    <script src="/hono/docs/js/learn.js?1621473403"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473403"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559518"></script>
+    <script src="/hono/docs/js/learn.js?1621559518"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559518"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473403" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473403"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559518" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559518"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>