Website build Hono-Website-Declarative-Pipeline-242

Signed-off-by: Hono Bot <hono-bot@eclipse.org>
diff --git a/docs/dev/404.html b/docs/dev/404.html
index 48b9203..9a18102 100644
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+++ b/docs/dev/404.html
@@ -18,15 +18,15 @@
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+      <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
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index 4af6eb2..8dfcb44 100644
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index 08bb961..4c5a268 100644
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     <title>AMQP 1.0 Messaging Network Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
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-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/amqp-network-config/">stable (1.7)</option>
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                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/amqp-network-config/">1.0</option>
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index 51cc4c7..cef7740 100644
--- a/docs/dev/admin-guide/auth-server-config/index.html
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@@ -21,21 +21,21 @@
     <title>Auth Server Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
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@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/auth-server-config/">stable (1.7)</option>
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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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/auth-server-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/auth-server-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/auth-server-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/auth-server-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/auth-server-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/auth-server-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/auth-server-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/auth-server-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/auth-server-config/" selected>dev</option>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/admin-guide/coap-adapter-config/index.html b/docs/dev/admin-guide/coap-adapter-config/index.html
index 3ae898b..dd4cc77 100644
--- a/docs/dev/admin-guide/coap-adapter-config/index.html
+++ b/docs/dev/admin-guide/coap-adapter-config/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
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+                  
+              
+                  
+              
+                  
+              
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+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/coap-adapter-config/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/coap-adapter-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/coap-adapter-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/coap-adapter-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/coap-adapter-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/coap-adapter-config/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/coap-adapter-config/" selected>dev</option>
@@ -3319,19 +3363,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/admin-guide/command-router-config/index.html b/docs/dev/admin-guide/command-router-config/index.html
index dade61f..99675ed 100644
--- a/docs/dev/admin-guide/command-router-config/index.html
+++ b/docs/dev/admin-guide/command-router-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Command Router Service :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/command-router-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/command-router-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/command-router-config/">1.5</option>
@@ -1752,6 +1790,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/command-router-config/" selected>dev</option>
@@ -3341,19 +3381,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/admin-guide/common-config/index.html b/docs/dev/admin-guide/common-config/index.html
index 39363f6..fa081c8 100644
--- a/docs/dev/admin-guide/common-config/index.html
+++ b/docs/dev/admin-guide/common-config/index.html
@@ -21,21 +21,21 @@
     <title>Common Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
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-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/common-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/common-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/common-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/common-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/common-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/common-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/common-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/common-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/common-config/" selected>dev</option>
@@ -3449,19 +3499,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/device-connection-config/index.html b/docs/dev/admin-guide/device-connection-config/index.html
index c575b6d..3387ed2 100644
--- a/docs/dev/admin-guide/device-connection-config/index.html
+++ b/docs/dev/admin-guide/device-connection-config/index.html
@@ -21,21 +21,21 @@
     <title>Configuring the Device Connection Service :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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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+                  
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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/device-connection-config/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-connection-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-connection-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-connection-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-connection-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-connection-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-connection-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-connection-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-connection-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-connection-config/" selected>dev</option>
@@ -3451,19 +3501,19 @@
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       <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/device-registry-config/index.html b/docs/dev/admin-guide/device-registry-config/index.html
index 47bf405..e64be83 100644
--- a/docs/dev/admin-guide/device-registry-config/index.html
+++ b/docs/dev/admin-guide/device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>Device Registry Configurations :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/device-registry-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/device-registry-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/device-registry-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/device-registry-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/device-registry-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/device-registry-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/device-registry-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/device-registry-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/device-registry-config/" selected>dev</option>
@@ -3156,19 +3206,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/file-based-device-registry-config/index.html b/docs/dev/admin-guide/file-based-device-registry-config/index.html
index 4f4c70a..cb77019 100644
--- a/docs/dev/admin-guide/file-based-device-registry-config/index.html
+++ b/docs/dev/admin-guide/file-based-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>File Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/file-based-device-registry-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/file-based-device-registry-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/file-based-device-registry-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/file-based-device-registry-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/file-based-device-registry-config/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/file-based-device-registry-config/" selected>dev</option>
@@ -3597,19 +3641,19 @@
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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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/hono-client-configuration/index.html b/docs/dev/admin-guide/hono-client-configuration/index.html
index f48868f..253c9c2 100644
--- a/docs/dev/admin-guide/hono-client-configuration/index.html
+++ b/docs/dev/admin-guide/hono-client-configuration/index.html
@@ -21,21 +21,21 @@
     <title>Hono Client Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-client-configuration/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/hono-client-configuration/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/hono-client-configuration/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/hono-client-configuration/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/hono-client-configuration/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/hono-client-configuration/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/hono-client-configuration/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/hono-client-configuration/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/hono-client-configuration/" selected>dev</option>
@@ -3455,19 +3505,19 @@
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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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/hono-kafka-client-configuration/index.html b/docs/dev/admin-guide/hono-kafka-client-configuration/index.html
index 269d380..92fccb2 100644
--- a/docs/dev/admin-guide/hono-kafka-client-configuration/index.html
+++ b/docs/dev/admin-guide/hono-kafka-client-configuration/index.html
@@ -21,21 +21,21 @@
     <title>Hono Kafka Client Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-kafka-client-configuration/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/hono-kafka-client-configuration/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/admin-guide/hono-kafka-client-configuration/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-kafka-client-configuration/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/hono-kafka-client-configuration/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/hono-kafka-client-configuration/" selected>dev</option>
@@ -3154,19 +3192,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559526"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559526"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559526"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559526"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559526"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559526"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559526"></script>
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index f51ed45..a4470d7 100644
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
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diff --git a/docs/dev/admin-guide/index.html b/docs/dev/admin-guide/index.html
index ebc883b..7b4063f 100644
--- a/docs/dev/admin-guide/index.html
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></script>
 
     <style>
       :root #header + #content > #left > #rlblock_left{
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-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/">stable (1.7)</option>
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index db3e012..85082f3 100644
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@@ -1752,6 +1790,8 @@
                   
               
                   
+              
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-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
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+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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+    <script src="/hono/docs/js/learn.js?1621559527"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/admin-guide/kura-adapter-config/index.html b/docs/dev/admin-guide/kura-adapter-config/index.html
index 9def009..4f55c41 100644
--- a/docs/dev/admin-guide/kura-adapter-config/index.html
+++ b/docs/dev/admin-guide/kura-adapter-config/index.html
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
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-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></script>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/admin-guide/kura-adapter-config/">stable (1.7)</option>
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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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/kura-adapter-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/kura-adapter-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/kura-adapter-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/kura-adapter-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/kura-adapter-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/kura-adapter-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/kura-adapter-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
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                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/kura-adapter-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/kura-adapter-config/" selected>dev</option>
@@ -3361,19 +3411,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/mongodb-device-registry-config/index.html b/docs/dev/admin-guide/mongodb-device-registry-config/index.html
index eac9e26..484f671 100644
--- a/docs/dev/admin-guide/mongodb-device-registry-config/index.html
+++ b/docs/dev/admin-guide/mongodb-device-registry-config/index.html
@@ -21,21 +21,21 @@
     <title>MongoDB Based Device Registry Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
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-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
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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/admin-guide/mongodb-device-registry-config/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mongodb-device-registry-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mongodb-device-registry-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mongodb-device-registry-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mongodb-device-registry-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mongodb-device-registry-config/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mongodb-device-registry-config/" selected>dev</option>
@@ -3413,19 +3457,19 @@
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     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
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-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/admin-guide/monitoring-tracing-config/index.html b/docs/dev/admin-guide/monitoring-tracing-config/index.html
index f44025c..f39384e 100644
--- a/docs/dev/admin-guide/monitoring-tracing-config/index.html
+++ b/docs/dev/admin-guide/monitoring-tracing-config/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/monitoring-tracing-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/monitoring-tracing-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/monitoring-tracing-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/monitoring-tracing-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/monitoring-tracing-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/monitoring-tracing-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/monitoring-tracing-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/monitoring-tracing-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/monitoring-tracing-config/" selected>dev</option>
@@ -3318,19 +3368,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
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-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/mqtt-adapter-config/index.html b/docs/dev/admin-guide/mqtt-adapter-config/index.html
index 30fd9ed..4a673d7 100644
--- a/docs/dev/admin-guide/mqtt-adapter-config/index.html
+++ b/docs/dev/admin-guide/mqtt-adapter-config/index.html
@@ -21,21 +21,21 @@
     <title>MQTT Adapter Configuration :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/mqtt-adapter-config/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/mqtt-adapter-config/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/mqtt-adapter-config/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/mqtt-adapter-config/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/mqtt-adapter-config/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/mqtt-adapter-config/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/mqtt-adapter-config/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/mqtt-adapter-config/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/mqtt-adapter-config/" selected>dev</option>
@@ -3416,19 +3466,19 @@
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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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/admin-guide/secure_communication/index.html b/docs/dev/admin-guide/secure_communication/index.html
index 5e0937f..56eaa15 100644
--- a/docs/dev/admin-guide/secure_communication/index.html
+++ b/docs/dev/admin-guide/secure_communication/index.html
@@ -21,21 +21,21 @@
     <title>Secure Communication :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/admin-guide/secure_communication/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/admin-guide/secure_communication/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/admin-guide/secure_communication/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/admin-guide/secure_communication/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/admin-guide/secure_communication/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/admin-guide/secure_communication/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/admin-guide/secure_communication/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/admin-guide/secure_communication/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/admin-guide/secure_communication/" selected>dev</option>
@@ -3483,19 +3533,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/api/authentication/index.html b/docs/dev/api/authentication/index.html
index e816f55..f025aa3 100644
--- a/docs/dev/api/authentication/index.html
+++ b/docs/dev/api/authentication/index.html
@@ -21,21 +21,21 @@
     <title>Authentication API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
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-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
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+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
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diff --git a/docs/dev/api/command-and-control-kafka/index.html b/docs/dev/api/command-and-control-kafka/index.html
index a449d55..7d70e43 100644
--- a/docs/dev/api/command-and-control-kafka/index.html
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
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+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
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+                    
+                    
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/command-and-control-kafka/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/command-and-control-kafka/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
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+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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+    <script src="/hono/docs/js/learn.js?1621559527"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
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diff --git a/docs/dev/api/command-and-control/index.html b/docs/dev/api/command-and-control/index.html
index b34240e..e171639 100644
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></script>
 
     <style>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
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@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/command-and-control/">stable (1.7)</option>
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+              
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+                    
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/command-and-control/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/command-and-control/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
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                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/command-and-control/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/command-and-control/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
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                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/command-and-control/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
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                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/command-and-control/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/command-and-control/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/command-and-control/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/command-and-control/" selected>dev</option>
@@ -3467,19 +3517,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
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-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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index dbed2d4..bc2f9ac 100644
--- a/docs/dev/api/command-router/index.html
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@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/command-router/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/command-router/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/command-router/">1.5</option>
@@ -1752,6 +1790,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/command-router/" selected>dev</option>
@@ -3444,19 +3484,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/credentials/index.html b/docs/dev/api/credentials/index.html
index 537ac39..cd2a121 100644
--- a/docs/dev/api/credentials/index.html
+++ b/docs/dev/api/credentials/index.html
@@ -21,21 +21,21 @@
     <title>Credentials API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/credentials/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/credentials/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/credentials/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/credentials/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/credentials/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/credentials/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/credentials/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/credentials/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/credentials/" selected>dev</option>
@@ -3697,19 +3747,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/device-connection/index.html b/docs/dev/api/device-connection/index.html
index 4f39377..cab21e3 100644
--- a/docs/dev/api/device-connection/index.html
+++ b/docs/dev/api/device-connection/index.html
@@ -21,21 +21,21 @@
     <title>Device Connection API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/device-connection/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/device-connection/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/device-connection/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/device-connection/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/device-connection/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/device-connection/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/device-connection/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/device-connection/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/device-connection/" selected>dev</option>
@@ -3794,19 +3844,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/device-registration/index.html b/docs/dev/api/device-registration/index.html
index a8d315f..7d07600 100644
--- a/docs/dev/api/device-registration/index.html
+++ b/docs/dev/api/device-registration/index.html
@@ -21,21 +21,21 @@
     <title>Device Registration API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/device-registration/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/device-registration/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/device-registration/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/device-registration/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/device-registration/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/device-registration/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/device-registration/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/device-registration/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/device-registration/" selected>dev</option>
@@ -3383,19 +3433,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/event-kafka/index.html b/docs/dev/api/event-kafka/index.html
index f013ca1..c8ee96e 100644
--- a/docs/dev/api/event-kafka/index.html
+++ b/docs/dev/api/event-kafka/index.html
@@ -21,21 +21,21 @@
     <title>Event API for Kafka Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/event-kafka/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/event-kafka/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/event-kafka/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/event-kafka/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/event-kafka/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/event-kafka/" selected>dev</option>
@@ -3192,19 +3230,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/event/index.html b/docs/dev/api/event/index.html
index f9e8beb..93de811 100644
--- a/docs/dev/api/event/index.html
+++ b/docs/dev/api/event/index.html
@@ -21,21 +21,21 @@
     <title>Event API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/event/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/event/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/event/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/event/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/event/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/event/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/event/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/event/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/event/" selected>dev</option>
@@ -3402,19 +3452,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/index.html b/docs/dev/api/index.html
index d951d54..f18f9c3 100644
--- a/docs/dev/api/index.html
+++ b/docs/dev/api/index.html
@@ -21,21 +21,21 @@
     <title>API :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/" selected>dev</option>
@@ -3143,19 +3193,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/kafka-api/index.html b/docs/dev/api/kafka-api/index.html
index 1e8384d..f53814c 100644
--- a/docs/dev/api/kafka-api/index.html
+++ b/docs/dev/api/kafka-api/index.html
@@ -21,21 +21,21 @@
     <title>Kafka-based APIs :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/kafka-api/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/kafka-api/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/kafka-api/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/kafka-api/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/kafka-api/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/kafka-api/" selected>dev</option>
@@ -3074,19 +3112,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/management/device-registry-v1.yaml b/docs/dev/api/management/device-registry-v1.yaml
index 2c473f6..ad4d5ac 100644
--- a/docs/dev/api/management/device-registry-v1.yaml
+++ b/docs/dev/api/management/device-registry-v1.yaml
@@ -846,13 +846,25 @@
                   gateways. If it is *true* and the *auto-provisioning-enabled* is also *true*, then the unregistered
                   devices that authenticate with a client certificate issued by this CA are provisioned as gateways
                   provided that the device registry implementation being used supports this feature.
+            "auto-provisioning-device-id-template":
+               type: string
+               required: false
+               description: |
+                  Specifies the template to use by the device registry to generate the `device-id` during 
+                  auto-provisioning of devices and gateways. The placeholders `{{subject-dn}}` and `{{subeject-cn}}` 
+                  are currently supported. The template MUST contain at least one of these placeholders. The `device-id`
+                  is generated by the device registry by replacing any placeholders in the template string with their
+                  corresponding *Subject DN* or *Common Name* from the client certificate used for authentication by 
+                  unregistered devices and gateways. The *Subject DN* is formatted according to the rules defined in 
+                  [RFC 2253](https://tools.ietf.org/html/rfc2253#section-2).
 
          example:
             subject-dn: "CN=devices,OU=iot,O=ACME"
             public-key: "Tk9UIEEgUFVCTElDIEtFWQ=="
             algorithm: "EC"
-            auto-provisioning-enabled: false
+            auto-provisioning-enabled: true
             auto-provision-as-gateway: false
+            auto-provisioning-device-id-template: "device-{{subject-dn}}"
             not-before: "2019-10-03T13:45:16+02:00"
             not-after: "2021-10-03T00:00:00Z"
 
diff --git a/docs/dev/api/management/index.html b/docs/dev/api/management/index.html
index 4bb3598..a881a49 100644
--- a/docs/dev/api/management/index.html
+++ b/docs/dev/api/management/index.html
@@ -21,21 +21,21 @@
     <title>Device Registry Management API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1627,7 +1627,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1655,6 +1687,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/management/">1.7</option>
@@ -1685,6 +1719,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/management/">1.6</option>
@@ -1715,6 +1751,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/management/">1.5</option>
@@ -1745,6 +1783,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/management/">1.4</option>
@@ -1775,6 +1815,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/management/">1.3</option>
@@ -1805,6 +1847,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/management/">1.2</option>
@@ -1835,6 +1879,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/management/">1.1</option>
@@ -1865,6 +1911,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/management/">1.0</option>
@@ -1895,6 +1943,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/management/" selected>dev</option>
@@ -3204,19 +3254,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/metrics/index.html b/docs/dev/api/metrics/index.html
index 9ae5e23..b29f251 100644
--- a/docs/dev/api/metrics/index.html
+++ b/docs/dev/api/metrics/index.html
@@ -21,21 +21,21 @@
     <title>Metrics :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559526" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559526" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559526" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559526"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559526"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559526"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559526"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/metrics/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/metrics/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/metrics/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/metrics/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/metrics/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/metrics/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/metrics/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/metrics/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/metrics/" selected>dev</option>
@@ -3430,19 +3480,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/telemetry-kafka/index.html b/docs/dev/api/telemetry-kafka/index.html
index 1f6b3ad..6d572a1 100644
--- a/docs/dev/api/telemetry-kafka/index.html
+++ b/docs/dev/api/telemetry-kafka/index.html
@@ -21,21 +21,21 @@
     <title>Telemetry API for Kafka Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/telemetry-kafka/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/api/telemetry-kafka/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/api/telemetry-kafka/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/telemetry-kafka/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/telemetry-kafka/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/telemetry-kafka/" selected>dev</option>
@@ -3162,19 +3200,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/telemetry/index.html b/docs/dev/api/telemetry/index.html
index 0689d7c..18e0e7b 100644
--- a/docs/dev/api/telemetry/index.html
+++ b/docs/dev/api/telemetry/index.html
@@ -21,21 +21,21 @@
     <title>Telemetry API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/telemetry/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/telemetry/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/telemetry/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/telemetry/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/telemetry/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/telemetry/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/telemetry/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/telemetry/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/telemetry/" selected>dev</option>
@@ -3320,19 +3370,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/api/tenant/index.html b/docs/dev/api/tenant/index.html
index d7ef469..ad76f16 100644
--- a/docs/dev/api/tenant/index.html
+++ b/docs/dev/api/tenant/index.html
@@ -21,21 +21,21 @@
     <title>Tenant API Specification :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/api/tenant/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/api/tenant/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/api/tenant/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/api/tenant/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/api/tenant/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/api/tenant/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/api/tenant/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/api/tenant/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/api/tenant/" selected>dev</option>
@@ -3770,19 +3820,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/architecture/auth/index.html b/docs/dev/architecture/auth/index.html
index 3fefd69..bf1c044 100644
--- a/docs/dev/architecture/auth/index.html
+++ b/docs/dev/architecture/auth/index.html
@@ -21,21 +21,21 @@
     <title>Authentication/Authorization :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/architecture/auth/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/auth/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/auth/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/auth/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/auth/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/auth/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/auth/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/auth/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/auth/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/auth/" selected>dev</option>
@@ -3198,19 +3248,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/architecture/component-view/index.html b/docs/dev/architecture/component-view/index.html
index 3da8e8e..ec57594 100644
--- a/docs/dev/architecture/component-view/index.html
+++ b/docs/dev/architecture/component-view/index.html
@@ -21,21 +21,21 @@
     <title>Component View :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></script>
 
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@@ -83,14 +83,14 @@
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
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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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/component-view/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
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                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/component-view/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
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                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/component-view/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
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                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/component-view/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/component-view/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/component-view/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/component-view/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/component-view/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/component-view/" selected>dev</option>
@@ -3214,19 +3264,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
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     </script>
diff --git a/docs/dev/architecture/index.html b/docs/dev/architecture/index.html
index c430d5f..1540516 100644
--- a/docs/dev/architecture/index.html
+++ b/docs/dev/architecture/index.html
@@ -21,21 +21,21 @@
     <title>Architecture :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
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+              
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+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/architecture/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/architecture/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/architecture/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/architecture/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/architecture/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/architecture/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/architecture/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/architecture/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/architecture/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/architecture/" selected>dev</option>
@@ -3142,19 +3192,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/categories/index.html b/docs/dev/categories/index.html
index 0002042..7ac178c 100644
--- a/docs/dev/categories/index.html
+++ b/docs/dev/categories/index.html
@@ -21,21 +21,21 @@
     <title>Categories :: Eclipse Hono&trade; Vers.: dev</title>
 
     
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-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
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-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/categories/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/categories/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/categories/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/categories/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/categories/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/categories/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/categories/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/categories/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/categories/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/categories/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/categories/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/categories/" selected>dev</option>
@@ -3139,19 +3189,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
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index dded167..82b840c 100644
--- a/docs/dev/concepts/command-and-control/index.html
+++ b/docs/dev/concepts/command-and-control/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></script>
 
     <style>
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@@ -83,14 +83,14 @@
     <span data-search-clear=""><i class="fas fa-times"></i></span>
 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
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 </script>
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+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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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+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/command-and-control/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/command-and-control/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/command-and-control/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/command-and-control/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/command-and-control/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/command-and-control/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/command-and-control/" selected>dev</option>
@@ -3220,19 +3264,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
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     </script>
diff --git a/docs/dev/concepts/connecting-devices/index.html b/docs/dev/concepts/connecting-devices/index.html
index 0a50a9e..d78b844 100644
--- a/docs/dev/concepts/connecting-devices/index.html
+++ b/docs/dev/concepts/connecting-devices/index.html
@@ -21,21 +21,21 @@
     <title>Connecting Devices :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/connecting-devices/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/connecting-devices/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/connecting-devices/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/connecting-devices/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/connecting-devices/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/connecting-devices/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/connecting-devices/">1.1</option>
@@ -1864,6 +1910,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/connecting-devices/" selected>dev</option>
@@ -3254,19 +3302,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
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diff --git a/docs/dev/concepts/connection-events/index.html b/docs/dev/concepts/connection-events/index.html
index 56d61d8..281e38a 100644
--- a/docs/dev/concepts/connection-events/index.html
+++ b/docs/dev/concepts/connection-events/index.html
@@ -21,21 +21,21 @@
     <title>Connection Events :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/connection-events/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/connection-events/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/connection-events/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/connection-events/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/connection-events/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/connection-events/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/connection-events/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/connection-events/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/connection-events/" selected>dev</option>
@@ -3177,19 +3227,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/device-identity/index.html b/docs/dev/concepts/device-identity/index.html
index 1ad3f56..20cd79e 100644
--- a/docs/dev/concepts/device-identity/index.html
+++ b/docs/dev/concepts/device-identity/index.html
@@ -21,21 +21,21 @@
     <title>Device Identity :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-identity/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-identity/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-identity/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-identity/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-identity/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/device-identity/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/device-identity/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/device-identity/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-identity/" selected>dev</option>
@@ -3181,19 +3231,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/device-notifications/index.html b/docs/dev/concepts/device-notifications/index.html
index d121fe1..c7d5afc 100644
--- a/docs/dev/concepts/device-notifications/index.html
+++ b/docs/dev/concepts/device-notifications/index.html
@@ -21,21 +21,21 @@
     <title>Device Notifications :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-notifications/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-notifications/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-notifications/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-notifications/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-notifications/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-notifications/" selected>dev</option>
@@ -3159,19 +3203,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/device-provisioning/index.html b/docs/dev/concepts/device-provisioning/index.html
index 9fc2870..da0a34a 100644
--- a/docs/dev/concepts/device-provisioning/index.html
+++ b/docs/dev/concepts/device-provisioning/index.html
@@ -21,21 +21,21 @@
     <title>Device Provisioning :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/device-provisioning/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/device-provisioning/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/device-provisioning/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/device-provisioning/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/device-provisioning/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/device-provisioning/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/device-provisioning/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/device-provisioning/">1.1</option>
@@ -1864,6 +1910,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/device-provisioning/" selected>dev</option>
@@ -2054,6 +2102,11 @@
 </ol>
 <p>If the Device Registry implementation provides the <a href="/hono/docs/dev/api/management/">Management API</a>, this could be done in a single step.
 For details refer to the <a href="/hono/docs/dev/api/tenant/#trusted-ca-format">Tenant API specification</a>.</p>
+<p>The Device Registry generates a unique device identifier during auto-provisioning. If <em>auto-provisioning-device-id-template</em>
+is configured in the corresponding tenant&rsquo;s CA entry, then the device registry generates the device identifier based on
+the configured template. If not configured, then a random unique device identifier is generated. Refer to the
+<a href="/hono/docs/dev/api/management/#tenants/createTenant">Device Registry Management API</a> for more details on how to
+configure a tenant&rsquo;s trusted CA authority for that.</p>
 <h5 id="step-2-connect-an-unregistered-device-to-hono">Step 2: Connect an unregistered Device to Hono</h5>
 <figure>
     <img src="auto-provisioning.svg"
@@ -3235,19 +3288,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/index.html b/docs/dev/concepts/index.html
index 263e456..c3ed253 100644
--- a/docs/dev/concepts/index.html
+++ b/docs/dev/concepts/index.html
@@ -21,21 +21,21 @@
     <title>Concepts :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/" selected>dev</option>
@@ -3139,19 +3189,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/resource-limits/index.html b/docs/dev/concepts/resource-limits/index.html
index a226265..b98b851 100644
--- a/docs/dev/concepts/resource-limits/index.html
+++ b/docs/dev/concepts/resource-limits/index.html
@@ -21,21 +21,21 @@
     <title>Resource limits :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/concepts/resource-limits/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/resource-limits/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/resource-limits/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/resource-limits/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/resource-limits/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/resource-limits/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/concepts/resource-limits/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/concepts/resource-limits/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/concepts/resource-limits/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/resource-limits/" selected>dev</option>
@@ -3215,19 +3265,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/concepts/tenancy/index.html b/docs/dev/concepts/tenancy/index.html
index e320ad4..7bb5f9f 100644
--- a/docs/dev/concepts/tenancy/index.html
+++ b/docs/dev/concepts/tenancy/index.html
@@ -21,21 +21,21 @@
     <title>Multi-Tenancy :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/concepts/tenancy/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/concepts/tenancy/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/concepts/tenancy/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/concepts/tenancy/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/concepts/tenancy/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/concepts/tenancy/" selected>dev</option>
@@ -3180,19 +3224,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/deployment/create-kubernetes-cluster/index.html b/docs/dev/deployment/create-kubernetes-cluster/index.html
index 28964a1..c546af1 100644
--- a/docs/dev/deployment/create-kubernetes-cluster/index.html
+++ b/docs/dev/deployment/create-kubernetes-cluster/index.html
@@ -21,21 +21,21 @@
     <title>Setting up a Kubernetes Cluster :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/create-kubernetes-cluster/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/create-kubernetes-cluster/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/create-kubernetes-cluster/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/create-kubernetes-cluster/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/create-kubernetes-cluster/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/create-kubernetes-cluster/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/create-kubernetes-cluster/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/create-kubernetes-cluster/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/create-kubernetes-cluster/" selected>dev</option>
@@ -3269,19 +3319,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/deployment/helm-based-deployment/index.html b/docs/dev/deployment/helm-based-deployment/index.html
index 41d14da..3d56a27 100644
--- a/docs/dev/deployment/helm-based-deployment/index.html
+++ b/docs/dev/deployment/helm-based-deployment/index.html
@@ -21,21 +21,21 @@
     <title>Helm based Deployment :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/helm-based-deployment/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/helm-based-deployment/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/helm-based-deployment/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/helm-based-deployment/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/helm-based-deployment/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/helm-based-deployment/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/helm-based-deployment/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/helm-based-deployment/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/helm-based-deployment/" selected>dev</option>
@@ -3319,19 +3369,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/deployment/index.html b/docs/dev/deployment/index.html
index c05a439..696dadd 100644
--- a/docs/dev/deployment/index.html
+++ b/docs/dev/deployment/index.html
@@ -21,21 +21,21 @@
     <title>Deployment :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
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+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
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+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
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@@ -1682,6 +1716,8 @@
                   
               
                   
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@@ -1742,6 +1780,8 @@
                   
               
                   
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@@ -1832,6 +1876,8 @@
                   
               
                   
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@@ -1862,6 +1908,8 @@
                   
               
                   
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@@ -1892,6 +1940,8 @@
                   
               
                   
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+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
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+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
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diff --git a/docs/dev/deployment/openshift/index.html b/docs/dev/deployment/openshift/index.html
index a5149a8..19cc239 100644
--- a/docs/dev/deployment/openshift/index.html
+++ b/docs/dev/deployment/openshift/index.html
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
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+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/openshift/">stable (1.7)</option>
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/openshift/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
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                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/openshift/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/openshift/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/openshift/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/openshift/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/openshift/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/deployment/openshift/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/openshift/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/openshift/" selected>dev</option>
@@ -3163,19 +3213,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
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index 9a5efde..7dd5bd6 100644
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@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
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+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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     <style>
       :root #header + #content > #left > #rlblock_left{
@@ -83,14 +83,14 @@
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 </div>
 
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-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/deployment/resource-limitation/">stable (1.7)</option>
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+                  
+              
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+              
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+              
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/deployment/resource-limitation/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/deployment/resource-limitation/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/deployment/resource-limitation/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/deployment/resource-limitation/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/deployment/resource-limitation/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/deployment/resource-limitation/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
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@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/deployment/resource-limitation/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/deployment/resource-limitation/" selected>dev</option>
@@ -3226,19 +3276,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/dev-guide/amqp_adapter_client/index.html b/docs/dev/dev-guide/amqp_adapter_client/index.html
index 3515008..3e01051 100644
--- a/docs/dev/dev-guide/amqp_adapter_client/index.html
+++ b/docs/dev/dev-guide/amqp_adapter_client/index.html
@@ -21,21 +21,21 @@
     <title>AMQP Adapter Client for Java :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/amqp_adapter_client/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/amqp_adapter_client/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/amqp_adapter_client/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/amqp_adapter_client/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/amqp_adapter_client/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/amqp_adapter_client/">1.2</option>
@@ -1836,6 +1880,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/amqp_adapter_client/" selected>dev</option>
@@ -3141,19 +3187,19 @@
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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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/dev-guide/building_hono/index.html b/docs/dev/dev-guide/building_hono/index.html
index 138ecf7..b8c6a1f 100644
--- a/docs/dev/dev-guide/building_hono/index.html
+++ b/docs/dev/dev-guide/building_hono/index.html
@@ -21,21 +21,21 @@
     <title>Building from Source :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/building_hono/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/building_hono/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/building_hono/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/building_hono/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/building_hono/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/building_hono/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/building_hono/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/building_hono/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/dev-guide/building_hono/" selected>dev</option>
@@ -3244,19 +3294,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/dev-guide/custom_http_adapter/index.html b/docs/dev/dev-guide/custom_http_adapter/index.html
index 91be121..1760cc2 100644
--- a/docs/dev/dev-guide/custom_http_adapter/index.html
+++ b/docs/dev/dev-guide/custom_http_adapter/index.html
@@ -21,21 +21,21 @@
     <title>Implement a Custom Hono HTTP Protocol Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/custom_http_adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
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@@ -1712,6 +1748,8 @@
                   
               
                   
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@@ -1742,6 +1780,8 @@
                   
               
                   
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@@ -1772,6 +1812,8 @@
                   
               
                   
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@@ -1802,6 +1844,8 @@
                   
               
                   
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@@ -1832,6 +1876,8 @@
                   
               
                   
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@@ -1862,6 +1908,8 @@
                   
               
                   
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@@ -1892,6 +1940,8 @@
                   
               
                   
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index 25a018e..ca9e357 100644
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
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+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
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@@ -1742,6 +1780,8 @@
                   
               
                   
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@@ -1772,6 +1812,8 @@
                   
               
                   
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                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
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@@ -1832,6 +1876,8 @@
                   
               
                   
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                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
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                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
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-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
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+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
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+    <script src="/hono/docs/js/learn.js?1621559528"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
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index d44e3fb..e6f0469 100644
--- a/docs/dev/dev-guide/java_client_consumer/index.html
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@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
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+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/dev-guide/java_client_consumer/">stable (1.7)</option>
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+                    
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+              
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+              
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+              
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/dev-guide/java_client_consumer/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/dev-guide/java_client_consumer/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/dev-guide/java_client_consumer/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/dev-guide/java_client_consumer/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/dev-guide/java_client_consumer/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/dev-guide/java_client_consumer/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/dev-guide/java_client_consumer/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
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                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/dev-guide/java_client_consumer/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
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@@ -3218,19 +3268,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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diff --git a/docs/dev/index.html b/docs/dev/index.html
index 38b3191..ce58597 100644
--- a/docs/dev/index.html
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@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
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+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
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+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
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@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
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+              
+                  
+              
+                  
+              
+                  
+              
+          
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+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
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                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
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                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/" selected>dev</option>
@@ -3115,19 +3165,19 @@
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-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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diff --git a/docs/dev/index.json b/docs/dev/index.json
index 269613c..e14277b 100644
--- a/docs/dev/index.json
+++ b/docs/dev/index.json
@@ -32,7 +32,7 @@
 	"title": "Device Provisioning",
 	"tags": [],
 	"description": "",
-	"content": "This page describes how devices are provisioned in Hono, i.e. how their digital representation is generated. For each device, registration information is stored that defines a device identity. Each device belongs to exactly one tenant. Each device must have at least one set of credentials that are used to authenticate to Hono.\nTo get an understanding of what is meant by the terms tenant, device registration and credentials, it is recommended to read the Device Identity page first.\nSo in order to use a device with Hono, it has to be provisioned. This means that registration information and at least one credential record must be stored in the device registry.\nThere are different ways to perform device provisioning.\nManual Device Provisioning Devices can be provisioned using Hono\u0026rsquo;s Device Registry Management API via HTTP.\nIf the desired tenant does not yet exist, it must be created first. How to do this is described in the tenants section of the Device Registry Management API.\nThe actual Device Provisioning is then performed by adding devices as described under devices section of the Device Registry Management API. This creates both a device identity and an (empty) credentials record. The last step is to add real credentials as described in the credentials section of the Device Registry Management API.\nAutomatic Device Provisioning The term Auto-Provisioning denotes a feature of Hono where the Device Registry automatically generates the credentials and registration information for a device the first time it connects. Auto-Provisioning is supported by Hono\u0026rsquo;s protocol adapters for devices that authenticate with client certificates or for devices that are connected via a gateway.\nPrerequisites Hono does not require a specific Device Registry implementation, but only specifies a set of APIs that must be provided by a compatible implementation. Since the main part of the Auto-Provisioning has to be done by the Device Registry, the used implementation must explicitly support this feature.\nClient certificate based Auto-Provisioning This feature can be enabled by supplying a certificate authority (CA) for a certain tenant:\nStep 1: Configure the Tenant The CA to be used by the devices needs to be configured. The following tasks must be performed:\n Create tenant Configure the trusted CA for the tenant Enable the feature for the CA  If the Device Registry implementation provides the Management API, this could be done in a single step. For details refer to the Tenant API specification.\nStep 2: Connect an unregistered Device to Hono   Automatic Provisioning of a Device   Hono\u0026rsquo;s protocol adapters query the APIs of the Device Registry during Device Authentication. First, the Tenant API is queried. If the Tenant configuration returned contains the CA used for authentication and the feature is switched on for this CA, the protocol adapter assumes that automatic provisioning must be performed. It puts the device\u0026rsquo;s certificate into the query to enable the device registry to do the provisioning.\nIf the Device Registry does not find any credentials for the device, it takes the information from the client certificate to create both credentials and device registration data for it.\nThe Device Registry is expected to perform the following steps:\n Generate a unique device-id Create device Create credentials Optional: Provision device in external systems  The newly created credentials are returned to the protocol adapter in the response as if they had been present before.\nThe following query of the Device Registration API returns the previously generated registration data.\nThe provisioning is, of course, a one-time action, on subsequent connections the APIs simply return the stored records.\nAutomatic Gateway Provisioning Auto-provisioning of gateways involves the same steps as Automatic Device Provisioning. An extra attribute namely auto-provision-as-gateway is needed in the tenant\u0026rsquo;s trusted CA configuration to enable auto-provisioning of gateways. If this attribute is set to true then the device registry provisions any unregistered devices that authenticate with a client certificate issued by this tenant\u0026rsquo;s trusted CA as gateways, provided that the attribute auto-provisioning-enabled is also set to true. Refer to the Device Registry Management API for more details on the tenant\u0026rsquo;s trusted CA configuration.\nGateway based Auto-Provisioning It refers to auto-provisioning of edge devices that are connected via gateways. Enabling gateway based auto-provisioning requires configuration of the gateway device:\nStep 1: Configure the Gateway Device The gateway device must have the corresponding authority (auto-provisioning-enabled) set. Refer to the Management API for creating or updating a corresponding device.\nStep 2: Connect an unregistered Device via Gateway to Hono   Automatic Provisioning of a Device via gateway   The yet unregistered edge device sends telemetry data via a gateway (1) to a protocol adapter which then checks if the edge device is already registered by calling the assert operation of Device Registration API (2). If the device registration service finds that the device isn\u0026rsquo;t registered yet and the gateway has the auto-provisioning-enabled authority set, it creates the edge device (3).\nSubsequently, after it made sure that it hasn\u0026rsquo;t already done so, it sends an Device Provisioning Notification with the hono_registration_status application property being set to NEW to the AMQP network (4). Once the event has been accepted by the peer (5), the registration service marks the event as delivered (6). The persistent flag guarantees that the Device Provisioning Notification is sent AT_LEAST_ONCE. (NB: applications may receive duplicates of the Device Provisioning Notification!).\nFinally, the device registration service returns the registration information to the protocol adapter (7) which then forwards the telemetry data to the AMQP network (8).\n"
+	"content": "This page describes how devices are provisioned in Hono, i.e. how their digital representation is generated. For each device, registration information is stored that defines a device identity. Each device belongs to exactly one tenant. Each device must have at least one set of credentials that are used to authenticate to Hono.\nTo get an understanding of what is meant by the terms tenant, device registration and credentials, it is recommended to read the Device Identity page first.\nSo in order to use a device with Hono, it has to be provisioned. This means that registration information and at least one credential record must be stored in the device registry.\nThere are different ways to perform device provisioning.\nManual Device Provisioning Devices can be provisioned using Hono\u0026rsquo;s Device Registry Management API via HTTP.\nIf the desired tenant does not yet exist, it must be created first. How to do this is described in the tenants section of the Device Registry Management API.\nThe actual Device Provisioning is then performed by adding devices as described under devices section of the Device Registry Management API. This creates both a device identity and an (empty) credentials record. The last step is to add real credentials as described in the credentials section of the Device Registry Management API.\nAutomatic Device Provisioning The term Auto-Provisioning denotes a feature of Hono where the Device Registry automatically generates the credentials and registration information for a device the first time it connects. Auto-Provisioning is supported by Hono\u0026rsquo;s protocol adapters for devices that authenticate with client certificates or for devices that are connected via a gateway.\nPrerequisites Hono does not require a specific Device Registry implementation, but only specifies a set of APIs that must be provided by a compatible implementation. Since the main part of the Auto-Provisioning has to be done by the Device Registry, the used implementation must explicitly support this feature.\nClient certificate based Auto-Provisioning This feature can be enabled by supplying a certificate authority (CA) for a certain tenant:\nStep 1: Configure the Tenant The CA to be used by the devices needs to be configured. The following tasks must be performed:\n Create tenant Configure the trusted CA for the tenant Enable the feature for the CA  If the Device Registry implementation provides the Management API, this could be done in a single step. For details refer to the Tenant API specification.\nThe Device Registry generates a unique device identifier during auto-provisioning. If auto-provisioning-device-id-template is configured in the corresponding tenant\u0026rsquo;s CA entry, then the device registry generates the device identifier based on the configured template. If not configured, then a random unique device identifier is generated. Refer to the Device Registry Management API for more details on how to configure a tenant\u0026rsquo;s trusted CA authority for that.\nStep 2: Connect an unregistered Device to Hono   Automatic Provisioning of a Device   Hono\u0026rsquo;s protocol adapters query the APIs of the Device Registry during Device Authentication. First, the Tenant API is queried. If the Tenant configuration returned contains the CA used for authentication and the feature is switched on for this CA, the protocol adapter assumes that automatic provisioning must be performed. It puts the device\u0026rsquo;s certificate into the query to enable the device registry to do the provisioning.\nIf the Device Registry does not find any credentials for the device, it takes the information from the client certificate to create both credentials and device registration data for it.\nThe Device Registry is expected to perform the following steps:\n Generate a unique device-id Create device Create credentials Optional: Provision device in external systems  The newly created credentials are returned to the protocol adapter in the response as if they had been present before.\nThe following query of the Device Registration API returns the previously generated registration data.\nThe provisioning is, of course, a one-time action, on subsequent connections the APIs simply return the stored records.\nAutomatic Gateway Provisioning Auto-provisioning of gateways involves the same steps as Automatic Device Provisioning. An extra attribute namely auto-provision-as-gateway is needed in the tenant\u0026rsquo;s trusted CA configuration to enable auto-provisioning of gateways. If this attribute is set to true then the device registry provisions any unregistered devices that authenticate with a client certificate issued by this tenant\u0026rsquo;s trusted CA as gateways, provided that the attribute auto-provisioning-enabled is also set to true. Refer to the Device Registry Management API for more details on the tenant\u0026rsquo;s trusted CA configuration.\nGateway based Auto-Provisioning It refers to auto-provisioning of edge devices that are connected via gateways. Enabling gateway based auto-provisioning requires configuration of the gateway device:\nStep 1: Configure the Gateway Device The gateway device must have the corresponding authority (auto-provisioning-enabled) set. Refer to the Management API for creating or updating a corresponding device.\nStep 2: Connect an unregistered Device via Gateway to Hono   Automatic Provisioning of a Device via gateway   The yet unregistered edge device sends telemetry data via a gateway (1) to a protocol adapter which then checks if the edge device is already registered by calling the assert operation of Device Registration API (2). If the device registration service finds that the device isn\u0026rsquo;t registered yet and the gateway has the auto-provisioning-enabled authority set, it creates the edge device (3).\nSubsequently, after it made sure that it hasn\u0026rsquo;t already done so, it sends an Device Provisioning Notification with the hono_registration_status application property being set to NEW to the AMQP network (4). Once the event has been accepted by the peer (5), the registration service marks the event as delivered (6). The persistent flag guarantees that the Device Provisioning Notification is sent AT_LEAST_ONCE. (NB: applications may receive duplicates of the Device Provisioning Notification!).\nFinally, the device registration service returns the registration information to the protocol adapter (7) which then forwards the telemetry data to the AMQP network (8).\n"
 },
 {
 	"uri": "https://www.eclipse.org/hono/docs/dev/concepts/connecting-devices/",
diff --git a/docs/dev/sitemap.xml b/docs/dev/sitemap.xml
index d399385..7c29a3f 100644
--- a/docs/dev/sitemap.xml
+++ b/docs/dev/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/jdbc-based-device-registry/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/user-guide/jdbc-based-device-registry/"
                 />
@@ -586,6 +651,11 @@
                 />
     <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/"
                 />
@@ -623,6 +693,11 @@
                 />
     <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/"
                 />
@@ -675,6 +750,11 @@
                 />
     <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/"
                 />
@@ -727,6 +807,11 @@
                 />
     <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/"
                 />
@@ -779,6 +864,11 @@
                 />
     <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/"
                 />
@@ -821,6 +911,11 @@
                 />
     <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/"
                 />
@@ -873,6 +968,11 @@
                 />
     <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/"
                 />
@@ -925,6 +1025,11 @@
                 />
     <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/"
                 />
@@ -977,6 +1082,11 @@
                 />
     <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/"
                 />
@@ -1029,6 +1139,11 @@
                 />
     <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/"
                 />
@@ -1081,6 +1196,11 @@
                 />
     <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/"
                 />
@@ -1118,6 +1238,11 @@
                 />
     <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/"
                 />
@@ -1145,6 +1270,11 @@
                 />
     <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/"
                 />
@@ -1182,6 +1312,11 @@
                 />
     <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/"
                 />
@@ -1209,6 +1344,11 @@
                 />
     <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/"
                 />
@@ -1261,6 +1401,11 @@
                 />
     <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/"
                 />
@@ -1313,6 +1458,11 @@
                 />
     <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/"
                 />
@@ -1365,6 +1515,11 @@
                 />
     <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/"
                 />
@@ -1417,6 +1572,11 @@
                 />
     <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/"
                 />
@@ -1454,6 +1614,11 @@
                 />
     <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/"
                 />
@@ -1506,6 +1671,11 @@
                 />
     <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/"
                 />
@@ -1558,6 +1728,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/admin-guide/hono-kafka-client-configuration/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/admin-guide/hono-kafka-client-configuration/"
                 />
@@ -1580,6 +1755,11 @@
                 />
     <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/"
                 />
@@ -1632,6 +1812,11 @@
                 />
     <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/"
                 />
@@ -1684,6 +1869,11 @@
                 />
     <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/"
                 />
@@ -1736,6 +1926,11 @@
                 />
     <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/"
                 />
@@ -1788,6 +1983,11 @@
                 />
     <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/"
                 />
@@ -1840,6 +2040,11 @@
                 />
     <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/"
                 />
@@ -1882,6 +2087,11 @@
                 />
     <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/"
                 />
@@ -1934,6 +2144,11 @@
                 />
     <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/"
                 />
@@ -1986,6 +2201,11 @@
                 />
     <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/"
                 />
@@ -2038,6 +2258,11 @@
                 />
     <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/"
                 />
@@ -2090,6 +2315,11 @@
                 />
     <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/"
                 />
@@ -2142,6 +2372,11 @@
                 />
     <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/"
                 />
@@ -2194,6 +2429,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/kafka-api/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/kafka-api/"
                 />
@@ -2216,6 +2456,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/telemetry-kafka/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/telemetry-kafka/"
                 />
@@ -2238,6 +2483,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/event-kafka/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/event-kafka/"
                 />
@@ -2260,6 +2510,11 @@
                 />
     <xhtml:link
                 rel="alternate"
+                hreflang="1.8"
+                href="https://www.eclipse.org/hono/docs/1.8/api/command-and-control-kafka/"
+                />
+    <xhtml:link
+                rel="alternate"
                 hreflang="1.7"
                 href="https://www.eclipse.org/hono/docs/1.7/api/command-and-control-kafka/"
                 />
@@ -2282,6 +2537,11 @@
                 />
     <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/"
                 />
@@ -2334,6 +2594,11 @@
                 />
     <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/"
                 />
@@ -2361,6 +2626,11 @@
                 />
     <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/"
                 />
@@ -2413,6 +2683,11 @@
                 />
     <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/"
                 />
@@ -2465,6 +2740,11 @@
                 />
     <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/"
                 />
@@ -2517,6 +2797,11 @@
                 />
     <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/"
                 />
@@ -2569,6 +2854,11 @@
                 />
     <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/"
                 />
@@ -2621,6 +2911,11 @@
                 />
     <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/"
                 />
@@ -2673,6 +2968,11 @@
                 />
     <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/"
                 />
@@ -2725,6 +3025,11 @@
                 />
     <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/"
                 />
@@ -2777,6 +3082,11 @@
                 />
     <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/"
                 />
@@ -2829,6 +3139,11 @@
                 />
     <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/"
                 />
@@ -2881,6 +3196,11 @@
                 />
     <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/"
                 />
@@ -2933,6 +3253,11 @@
                 />
     <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/"
                 />
@@ -2985,6 +3310,11 @@
                 />
     <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/"
                 />
@@ -3037,6 +3367,11 @@
                 />
     <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/"
                 />
@@ -3089,6 +3424,11 @@
                 />
     <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/"
                 />
@@ -3141,6 +3481,11 @@
                 />
     <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/"
                 />
@@ -3193,6 +3538,11 @@
                 />
     <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/"
                 />
@@ -3245,6 +3595,11 @@
                 />
     <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/dev/tags/index.html b/docs/dev/tags/index.html
index 8a7d382..a070d98 100644
--- a/docs/dev/tags/index.html
+++ b/docs/dev/tags/index.html
@@ -21,21 +21,21 @@
     <title>Tags :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473412" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473412" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473412"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473412"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473412"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/tags/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/tags/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/tags/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
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                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/tags/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/tags/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
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                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/tags/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
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                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/tags/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
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+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/tags/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
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@@ -3139,19 +3189,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
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-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
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diff --git a/docs/dev/user-guide/amqp-adapter/index.html b/docs/dev/user-guide/amqp-adapter/index.html
index d508ca1..3cc6765 100644
--- a/docs/dev/user-guide/amqp-adapter/index.html
+++ b/docs/dev/user-guide/amqp-adapter/index.html
@@ -21,21 +21,21 @@
     <title>AMQP Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
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-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
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+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/amqp-adapter/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/amqp-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/amqp-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/amqp-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/amqp-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/amqp-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/amqp-adapter/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/amqp-adapter/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/amqp-adapter/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/amqp-adapter/" selected>dev</option>
@@ -3726,19 +3776,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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     </script>
diff --git a/docs/dev/user-guide/coap-adapter/index.html b/docs/dev/user-guide/coap-adapter/index.html
index 51e8477..b2cbe69 100644
--- a/docs/dev/user-guide/coap-adapter/index.html
+++ b/docs/dev/user-guide/coap-adapter/index.html
@@ -21,21 +21,21 @@
     <title>CoAP Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/coap-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/coap-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/coap-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/coap-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/coap-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/coap-adapter/">1.2</option>
@@ -1836,6 +1880,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/coap-adapter/" selected>dev</option>
@@ -3985,19 +4031,19 @@
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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diff --git a/docs/dev/user-guide/device-registry/index.html b/docs/dev/user-guide/device-registry/index.html
index 1ea8eb4..27a2b47 100644
--- a/docs/dev/user-guide/device-registry/index.html
+++ b/docs/dev/user-guide/device-registry/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
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+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/device-registry/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/device-registry/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/device-registry/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/device-registry/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/device-registry/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/device-registry/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/device-registry/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/device-registry/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/device-registry/" selected>dev</option>
@@ -3155,19 +3205,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/user-guide/file-based-device-registry/index.html b/docs/dev/user-guide/file-based-device-registry/index.html
index d4caa16..859efa7 100644
--- a/docs/dev/user-guide/file-based-device-registry/index.html
+++ b/docs/dev/user-guide/file-based-device-registry/index.html
@@ -21,21 +21,21 @@
     <title>File Based Device Registry :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/file-based-device-registry/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/file-based-device-registry/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/file-based-device-registry/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/file-based-device-registry/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/file-based-device-registry/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/file-based-device-registry/" selected>dev</option>
@@ -3096,19 +3140,19 @@
     <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?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/user-guide/http-adapter/index.html b/docs/dev/user-guide/http-adapter/index.html
index ebd2697..7aa10e4 100644
--- a/docs/dev/user-guide/http-adapter/index.html
+++ b/docs/dev/user-guide/http-adapter/index.html
@@ -21,21 +21,21 @@
     <title>HTTP Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559527"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/http-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/http-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/http-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/http-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/http-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/http-adapter/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/http-adapter/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/http-adapter/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/http-adapter/" selected>dev</option>
@@ -3916,19 +3966,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/user-guide/index.html b/docs/dev/user-guide/index.html
index a1ee431..fc42e94 100644
--- a/docs/dev/user-guide/index.html
+++ b/docs/dev/user-guide/index.html
@@ -21,21 +21,21 @@
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@@ -1712,6 +1748,8 @@
                   
               
                   
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@@ -1742,6 +1780,8 @@
                   
               
                   
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@@ -1802,6 +1844,8 @@
                   
               
                   
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@@ -1832,6 +1876,8 @@
                   
               
                   
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@@ -1892,6 +1940,8 @@
                   
               
                   
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
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+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
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+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
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-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
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-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
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     <script>
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diff --git a/docs/dev/user-guide/jdbc-based-device-registry/index.html b/docs/dev/user-guide/jdbc-based-device-registry/index.html
index 65143fa..2119d76 100644
--- a/docs/dev/user-guide/jdbc-based-device-registry/index.html
+++ b/docs/dev/user-guide/jdbc-based-device-registry/index.html
@@ -21,21 +21,21 @@
     <title>JDBC Based Device Registry :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
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-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
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 <script type="text/javascript">
     
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-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
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+                    
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@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/jdbc-based-device-registry/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/jdbc-based-device-registry/">1.6</option>
@@ -1724,6 +1760,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/jdbc-based-device-registry/" selected>dev</option>
@@ -3010,19 +3048,19 @@
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     </div>
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-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473411"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473411"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473411"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473411"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473411"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473411"></script>
-    <script src="/hono/docs/js/learn.js?1621473411"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473411"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473411" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473411"></script>
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+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
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index c63a7b0..4f1dc45 100644
--- a/docs/dev/user-guide/kura-adapter/index.html
+++ b/docs/dev/user-guide/kura-adapter/index.html
@@ -21,21 +21,21 @@
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-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
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+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
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-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
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@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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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+              
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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/kura-adapter/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/kura-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/kura-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/kura-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/kura-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/kura-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/kura-adapter/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/kura-adapter/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/kura-adapter/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/kura-adapter/" selected>dev</option>
@@ -3316,19 +3366,19 @@
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-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
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-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
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     </script>
diff --git a/docs/dev/user-guide/mongodb-based-device-registry/index.html b/docs/dev/user-guide/mongodb-based-device-registry/index.html
index 08e859d..eb006d8 100644
--- a/docs/dev/user-guide/mongodb-based-device-registry/index.html
+++ b/docs/dev/user-guide/mongodb-based-device-registry/index.html
@@ -21,21 +21,21 @@
     <title>MongoDB Based Device Registry :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559527" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559527" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559527" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559527"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559527"></script>
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 <script type="text/javascript">
     
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 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559527"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/mongodb-based-device-registry/">stable (1.7)</option>
+                      <option id="stable" value="https://www.eclipse.org/hono/docs/user-guide/mongodb-based-device-registry/">stable (1.8)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.8" value="https://www.eclipse.org/hono/docs/1.8/user-guide/mongodb-based-device-registry/">1.8</option>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/mongodb-based-device-registry/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/mongodb-based-device-registry/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/mongodb-based-device-registry/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/mongodb-based-device-registry/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/mongodb-based-device-registry/">1.3</option>
@@ -1808,6 +1850,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/mongodb-based-device-registry/" selected>dev</option>
@@ -3086,19 +3130,19 @@
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     </div>
-    <script src="/hono/docs/js/clipboard.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559527"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559527"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559527"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559527"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559527"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559527"></script>
+    <script src="/hono/docs/js/learn.js?1621559527"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559527"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559527" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559527"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/user-guide/mqtt-adapter/index.html b/docs/dev/user-guide/mqtt-adapter/index.html
index 5f5f696..81724c6 100644
--- a/docs/dev/user-guide/mqtt-adapter/index.html
+++ b/docs/dev/user-guide/mqtt-adapter/index.html
@@ -21,21 +21,21 @@
     <title>MQTT Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/mqtt-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/mqtt-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/mqtt-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/mqtt-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/mqtt-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/mqtt-adapter/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/mqtt-adapter/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/mqtt-adapter/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/mqtt-adapter/" selected>dev</option>
@@ -3890,19 +3940,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/dev/user-guide/sigfox-adapter/index.html b/docs/dev/user-guide/sigfox-adapter/index.html
index f85abfc..9c15d6a 100644
--- a/docs/dev/user-guide/sigfox-adapter/index.html
+++ b/docs/dev/user-guide/sigfox-adapter/index.html
@@ -21,21 +21,21 @@
     <title>Sigfox Adapter :: Eclipse Hono&trade; Vers.: dev</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1621473411" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/atom-one-dark-reasonable.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1621559528" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/theme-hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/theme-hono.css?1621559528" rel="stylesheet">
     
-    <link href="/hono/docs/css/hono.css?1621473411" rel="stylesheet">
+    <link href="/hono/docs/css/hono.css?1621559528" rel="stylesheet">
 
-    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621473411"></script>
+    <script src="/hono/docs/js/jquery-3.3.1.min.js?1621559528"></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?1621473411"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1621559528"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1621559528"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/dev";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1621473411"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1621559528"></script>
 
     
   </div>
@@ -1624,7 +1624,39 @@
                   
                     
                     
-                      <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>
                     
                   
               
@@ -1652,6 +1684,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.7" value="https://www.eclipse.org/hono/docs/1.7/user-guide/sigfox-adapter/">1.7</option>
@@ -1682,6 +1716,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.6" value="https://www.eclipse.org/hono/docs/1.6/user-guide/sigfox-adapter/">1.6</option>
@@ -1712,6 +1748,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="https://www.eclipse.org/hono/docs/1.5/user-guide/sigfox-adapter/">1.5</option>
@@ -1742,6 +1780,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="https://www.eclipse.org/hono/docs/1.4/user-guide/sigfox-adapter/">1.4</option>
@@ -1772,6 +1812,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="https://www.eclipse.org/hono/docs/1.3/user-guide/sigfox-adapter/">1.3</option>
@@ -1802,6 +1844,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="https://www.eclipse.org/hono/docs/1.2/user-guide/sigfox-adapter/">1.2</option>
@@ -1832,6 +1876,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="https://www.eclipse.org/hono/docs/1.1/user-guide/sigfox-adapter/">1.1</option>
@@ -1862,6 +1908,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="https://www.eclipse.org/hono/docs/1.0/user-guide/sigfox-adapter/">1.0</option>
@@ -1892,6 +1940,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="https://www.eclipse.org/hono/docs/dev/user-guide/sigfox-adapter/" selected>dev</option>
@@ -3267,19 +3317,19 @@
     <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?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621473412"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621473412"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1621473412"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1621473412"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1621473412"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1621559528"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1621559528"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1621559528"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1621559528"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1621559528"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621473412"></script>
-    <script src="/hono/docs/js/learn.js?1621473412"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1621473412"></script>
+    <script src="/hono/docs/js/modernizr.custom-3.6.0.js?1621559528"></script>
+    <script src="/hono/docs/js/learn.js?1621559528"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1621559528"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1621473412" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1621473412"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1621559528" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1621559528"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>