bundles/org.eclipse.emf.ecp.ui.view.editor.controls.legacy/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.ui.menus">
      <menuContribution
            allPopups="false"
            locationURI="popup:org.eclipse.emf.ecp.ui.ModelExplorerView">
         <command
               commandId="org.eclipse.emf.ecp.ui.view.editor.controls.unsetRootEclass"
               label="Unset Root EClass"
               style="push">
            <visibleWhen
                  checkEnabled="false">
               <with
                     variable="activeMenuSelection">
                  <and>
                     <count
                           value="1">
                     </count>
                     <iterate>
                        <instanceof
                              value="org.eclipse.emf.ecp.view.spi.model.VView">
                        </instanceof>
                     </iterate>
                  </and>
               </with>
            </visibleWhen>
         </command>
      </menuContribution>
   </extension>
   <extension
         point="org.eclipse.ui.commands">
      <command
            name="Unset Root EClass"
            defaultHandler="org.eclipse.emf.ecp.ui.view.internal.editor.controls.legacy.handler.UnsetRootEClass"
            id="org.eclipse.emf.ecp.ui.view.editor.controls.unsetRootEclass">
      </command>
   </extension>
   <extension
         point="org.eclipse.emf.ecp.ui.dropAdapter">
      <ECPDropAdapter
            class="org.eclipse.emf.ecp.ui.view.internal.editor.controls.legacy.handler.ViewEditorDropAdapter">
      </ECPDropAdapter>
   </extension>

</plugin>