Hide a Namespace in the CMS editor

When your plugin defines a namespace and that namespace is not intended for editing in the CMS, make sure that you add the following configuration to hide that namespace from the configuration tab:

hippoecm-extension.xml

 <sv:node sv:name="hide-mynamespace-from-configuration">
   <sv:property sv:name="jcr:primaryType" sv:type="Name">
     <sv:value>hippo:initializeitem</sv:value>
   </sv:property>
   <sv:property sv:name="hippo:sequence" sv:type="Double">
     <sv:value>10000</sv:value>
   </sv:property>
   <sv:property sv:name="hippo:contentresource" sv:type="String">
     <sv:value>hide-mynamespace.xml</sv:value>
   </sv:property>
   <sv:property sv:name="hippo:contentroot" sv:type="String">
     <sv:value>
        /hippo:configuration/hippo:frontend/cms/cms-tree-views/configuration/configurationBrowser/filters
      </sv:value>
   </sv:property>
 </sv:node>

hide-mynamespace.xml

 <sv:node xmlns:sv="http://www.jcp.org/jcr/sv/1.0"
          xmlns:h="http://www.onehippo.org/jcr/xmlimport"
          sv:name="hideMynamespace" h:merge="insert"
          h:location="showOtherNamespaces">
   <sv:property sv:name="jcr:primaryType" sv:type="Name">
     <sv:value>frontend:pluginconfig</sv:value>
   </sv:property>
   <sv:property sv:name="display" sv:type="Boolean">
     <sv:value>false</sv:value>
   </sv:property>
   <sv:property sv:name="path" sv:type="String">
     <sv:value>/hippo:namespaces/mynamespace</sv:value>
   </sv:property>
 </sv:node>