examples/org.eclipse.ocl.examples.modelregistry.edit/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
    
  <extension point="org.eclipse.emf.edit.itemProviderAdapterFactories">
    <factory 
       uri = "http://www.eclipse.org/ocl/1.0/ModelRegistry" 
       class = "org.eclipse.ocl.examples.modelregistry.provider.ModelRegistryItemProviderAdapterFactory" 
       supportedTypes = 
         "org.eclipse.emf.edit.provider.IEditingDomainItemProvider
          org.eclipse.emf.edit.provider.IStructuredItemContentProvider
          org.eclipse.emf.edit.provider.ITreeItemContentProvider
          org.eclipse.emf.edit.provider.IItemLabelProvider
          org.eclipse.emf.edit.provider.IItemPropertySource" />
  </extension>

</plugin>