Open relative publication root name to document that extends Domain

• I Create a new MyDomain type that extends Domain
• I Create a root container named toto with Structure template
• I contribute the following contribution

  <extension point="treeInstance" target="org.nuxeo.ecm.platform.publisher.impl.service.PublisherServiceImpl">
  
   <extension point="treeInstance" target="org.nuxeo.ecm.platform.publisher.impl.service.PublisherServiceImpl">
      <publicationTreeConfig factory="CoreProxyWithWorkflow" localSectionTree="true" name="MySection" title="MySection" tree="RootSectionsCoreTree">
        <parameters>
          <parameter name="RelativeRootPath">/toto</parameter>
          <parameter name="enableSnapshot">true</parameter>
          <parameter name="iconExpanded">/icons/folder_open.gif</parameter>
          <parameter name="iconCollapsed">/icons/folder.gif</parameter>
        </parameters>
      </publicationTreeConfig>
    </extension>
  

  Problem :
  My Section Tree is not displayed.
  This is because we just check the relative path for Domain doc and not extension, because in PublisherServiceImpl#registerPendingDescriptors we have this :

   List<DocumentModel> domains = new DomainsFinder(repositoryName).getDomains();
  

  And returne domains are used for the relative path search. If you look the query executed for the DomainFinder we have :

  SELECT * FROM Document WHERE ecm:primaryType = 'Domain'...
  

Waiting behavior
It would be more useful to have this request :

SELECT * FROM Domain...

Work around:
Without this evolution you must set an absolute path in your descriptor

<extension point="treeInstance" target="org.nuxeo.ecm.platform.publisher.impl.service.PublisherServiceImpl">

 <extension point="treeInstance" target="org.nuxeo.ecm.platform.publisher.impl.service.PublisherServiceImpl">
    <publicationTreeConfig factory="CoreProxyWithWorkflow" localSectionTree="true" name="MySection" title="MySection" tree="RootSectionsCoreTree">
      <parameters>
        <parameter name="RootPath">/mydomain/toto</parameter>
        <parameter name="enableSnapshot">true</parameter>
        <parameter name="iconExpanded">/icons/folder_open.gif</parameter>
        <parameter name="iconCollapsed">/icons/folder.gif</parameter>
      </parameters>
    </publicationTreeConfig>
  </extension>

And for each instance of domain