diff --git a/docs/1.4/api/authentication/index.html b/docs/1.4/api/authentication/index.html
index ea7c311..24b6448 100644
--- a/docs/1.4/api/authentication/index.html
+++ b/docs/1.4/api/authentication/index.html
@@ -21,19 +21,19 @@
     <title>Authentication API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/authentication/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/authentication/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/authentication/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/authentication/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/authentication/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/authentication/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/authentication/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/authentication/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/authentication/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/authentication/">dev</option>
@@ -2823,20 +2865,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/command-and-control/index.html b/docs/1.4/api/command-and-control/index.html
index 4914ff9..49c504a 100644
--- a/docs/1.4/api/command-and-control/index.html
+++ b/docs/1.4/api/command-and-control/index.html
@@ -21,19 +21,19 @@
     <title>Command & Control API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/command-and-control/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/command-and-control/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/command-and-control/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/command-and-control/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/command-and-control/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/command-and-control/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/command-and-control/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/command-and-control/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/command-and-control/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/command-and-control/">dev</option>
@@ -3044,20 +3086,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/credentials/index.html b/docs/1.4/api/credentials/index.html
index 6e71cd0..8834fd0 100644
--- a/docs/1.4/api/credentials/index.html
+++ b/docs/1.4/api/credentials/index.html
@@ -21,19 +21,19 @@
     <title>Credentials API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/credentials/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/credentials/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/credentials/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/credentials/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/credentials/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/credentials/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/credentials/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/credentials/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/credentials/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/credentials/">dev</option>
@@ -3316,20 +3358,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/device-connection/index.html b/docs/1.4/api/device-connection/index.html
index f6cb889..e53830a 100644
--- a/docs/1.4/api/device-connection/index.html
+++ b/docs/1.4/api/device-connection/index.html
@@ -21,19 +21,19 @@
     <title>Device Connection API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/device-connection/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/device-connection/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/device-connection/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/device-connection/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/device-connection/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/device-connection/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/device-connection/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/device-connection/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/device-connection/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/device-connection/">dev</option>
@@ -3445,20 +3487,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/device-registration/index.html b/docs/1.4/api/device-registration/index.html
index 41a46f9..c98fd82 100644
--- a/docs/1.4/api/device-registration/index.html
+++ b/docs/1.4/api/device-registration/index.html
@@ -21,19 +21,19 @@
     <title>Device Registration API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/device-registration/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/device-registration/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/device-registration/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/device-registration/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/device-registration/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/device-registration/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/device-registration/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/device-registration/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/device-registration/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/device-registration/">dev</option>
@@ -2931,20 +2973,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/event/index.html b/docs/1.4/api/event/index.html
index bcb619b..6b65d4a 100644
--- a/docs/1.4/api/event/index.html
+++ b/docs/1.4/api/event/index.html
@@ -21,19 +21,19 @@
     <title>Event API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/event/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/event/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/event/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/event/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/event/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/event/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/event/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/event/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/event/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/event/">dev</option>
@@ -2898,20 +2940,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/index.html b/docs/1.4/api/index.html
index 88817cc..98ced4d 100644
--- a/docs/1.4/api/index.html
+++ b/docs/1.4/api/index.html
@@ -21,19 +21,19 @@
     <title>API :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/">dev</option>
@@ -2642,20 +2684,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232243"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232243"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232243"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232243"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232243"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232243"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232243"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232243"></script>
+    <script src="/hono/docs/js/learn.js?1612232243"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232243"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232243" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232243"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/management/index.html b/docs/1.4/api/management/index.html
index dad2aab..54b7af4 100644
--- a/docs/1.4/api/management/index.html
+++ b/docs/1.4/api/management/index.html
@@ -21,19 +21,19 @@
     <title>Device Registry Management API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145439" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145439" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145439"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145439"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145439"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145439"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1343,7 +1343,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/management/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/management/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/management/">1.6</option>
                     
                   
               
@@ -1367,6 +1395,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/management/">1.5</option>
@@ -1393,6 +1423,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/management/" selected>1.4</option>
@@ -1419,6 +1451,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/management/">1.3</option>
@@ -1445,6 +1479,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/management/">1.2</option>
@@ -1471,6 +1507,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/management/">1.1</option>
@@ -1497,6 +1535,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/management/">1.0</option>
@@ -1523,6 +1563,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/management/">dev</option>
@@ -2683,20 +2725,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/metrics/index.html b/docs/1.4/api/metrics/index.html
index eef529f..abed605 100644
--- a/docs/1.4/api/metrics/index.html
+++ b/docs/1.4/api/metrics/index.html
@@ -21,19 +21,19 @@
     <title>Metrics :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145439" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145439" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145439" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145439"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145439"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145439"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145439"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/metrics/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/metrics/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/metrics/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/metrics/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/metrics/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/metrics/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/metrics/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/metrics/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/metrics/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/metrics/">dev</option>
@@ -2982,20 +3024,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232245"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232245"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232245"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232245"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232245"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232245"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232245"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232245"></script>
+    <script src="/hono/docs/js/learn.js?1612232245"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232245"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232245" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232245"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/telemetry/index.html b/docs/1.4/api/telemetry/index.html
index 1bf6b64..587654c 100644
--- a/docs/1.4/api/telemetry/index.html
+++ b/docs/1.4/api/telemetry/index.html
@@ -21,19 +21,19 @@
     <title>Telemetry API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/telemetry/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/telemetry/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/telemetry/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/telemetry/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/telemetry/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/telemetry/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/telemetry/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/telemetry/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/telemetry/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/telemetry/">dev</option>
@@ -2865,20 +2907,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>
diff --git a/docs/1.4/api/tenant/index.html b/docs/1.4/api/tenant/index.html
index 36ade67..e7f8c4d 100644
--- a/docs/1.4/api/tenant/index.html
+++ b/docs/1.4/api/tenant/index.html
@@ -21,19 +21,19 @@
     <title>Tenant API Specification :: Eclipse Hono&trade; Vers.: 1.4</title>
 
     
-    <link href="/hono/docs/css/nucleus.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/fontawesome-all.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hybrid.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/featherlight.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/auto-complete.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/theme.css?1612145438" rel="stylesheet">
-    <link href="/hono/docs/css/hugo-theme.css?1612145438" rel="stylesheet">
+    <link href="/hono/docs/css/nucleus.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/fontawesome-all.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hybrid.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/featherlight.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/perfect-scrollbar.min.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/auto-complete.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/theme.css?1612232243" rel="stylesheet">
+    <link href="/hono/docs/css/hugo-theme.css?1612232243" rel="stylesheet">
     
-      <link href="/hono/docs/css/theme-hono.css?1612145438" rel="stylesheet">
+      <link href="/hono/docs/css/theme-hono.css?1612232243" rel="stylesheet">
     
 
-    <script src="/hono/docs/js/jquery-2.x.min.js?1612145438"></script>
+    <script src="/hono/docs/js/jquery-2.x.min.js?1612232243"></script>
 
     <style type="text/css">
       :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?1612145438"></script>
-<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/lunr.min.js?1612232243"></script>
+<script type="text/javascript" src="/hono/docs/js/auto-complete.js?1612232243"></script>
 <script type="text/javascript">
     
         var baseurl = "https:\/\/www.eclipse.org\/hono\/docs\/\/1.4";
     
 </script>
-<script type="text/javascript" src="/hono/docs/js/search.js?1612145438"></script>
+<script type="text/javascript" src="/hono/docs/js/search.js?1612232243"></script>
 
     
   </div>
@@ -1340,7 +1340,35 @@
                   
                     
                     
-                      <option id="stable" value="/hono/docs/api/tenant/">stable (1.5)</option>
+                      <option id="stable" value="/hono/docs/api/tenant/">stable (1.6)</option>
+                    
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+                  
+              
+          
+              
+              
+                  
+              
+                  
+                    
+                    
+                      <option id="1.6" value="/hono/docs/1.6/api/tenant/">1.6</option>
                     
                   
               
@@ -1364,6 +1392,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.5" value="/hono/docs/1.5/api/tenant/">1.5</option>
@@ -1390,6 +1420,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.4" value="/hono/docs/1.4/api/tenant/" selected>1.4</option>
@@ -1416,6 +1448,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.3" value="/hono/docs/1.3/api/tenant/">1.3</option>
@@ -1442,6 +1476,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.2" value="/hono/docs/1.2/api/tenant/">1.2</option>
@@ -1468,6 +1504,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.1" value="/hono/docs/1.1/api/tenant/">1.1</option>
@@ -1494,6 +1532,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="1.0" value="/hono/docs/1.0/api/tenant/">1.0</option>
@@ -1520,6 +1560,8 @@
                   
               
                   
+              
+                  
                     
                     
                       <option id="dev" value="/hono/docs/dev/api/tenant/">dev</option>
@@ -3391,20 +3433,20 @@
     <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?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612145439"></script>
-    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612145439"></script>
-    <script src="/hono/docs/js/jquery.sticky.js?1612145439"></script>
-    <script src="/hono/docs/js/featherlight.min.js?1612145439"></script>
-    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612145439"></script>
-    <script src="/hono/docs/js/highlight.pack.js?1612145439"></script>
+    <script src="/hono/docs/js/clipboard.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.min.js?1612232244"></script>
+    <script src="/hono/docs/js/perfect-scrollbar.jquery.min.js?1612232244"></script>
+    <script src="/hono/docs/js/jquery.sticky.js?1612232244"></script>
+    <script src="/hono/docs/js/featherlight.min.js?1612232244"></script>
+    <script src="/hono/docs/js/html5shiv-printshiv.min.js?1612232244"></script>
+    <script src="/hono/docs/js/highlight.pack.js?1612232244"></script>
     <script>hljs.initHighlightingOnLoad();</script>
-    <script src="/hono/docs/js/modernizr.custom.71422.js?1612145439"></script>
-    <script src="/hono/docs/js/learn.js?1612145439"></script>
-    <script src="/hono/docs/js/hugo-learn.js?1612145439"></script>
+    <script src="/hono/docs/js/modernizr.custom.71422.js?1612232244"></script>
+    <script src="/hono/docs/js/learn.js?1612232244"></script>
+    <script src="/hono/docs/js/hugo-learn.js?1612232244"></script>
 
-    <link href="/hono/docs/mermaid/mermaid.css?1612145439" type="text/css" rel="stylesheet" />
-    <script src="/hono/docs/mermaid/mermaid.js?1612145439"></script>
+    <link href="/hono/docs/mermaid/mermaid.css?1612232244" type="text/css" rel="stylesheet" />
+    <script src="/hono/docs/mermaid/mermaid.js?1612232244"></script>
     <script>
         mermaid.initialize({ startOnLoad: true });
     </script>