modeling/plugins/org.eclipse.pde.emfforms/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.ui.decorators">
      <decorator
            class="org.eclipse.pde.emfforms.internal.validation.EmfValidatorLabelDecorator"
            id="org.eclipse.pde.emfforms.masterDetailDecorator"
            label="EMF trees warnning and errors"
            lightweight="true"
            location="BOTTOM_LEFT"
            state="true">
         <enablement>
            <or>
               <objectClass
                     name="org.eclipse.emf.ecore.EObject">
               </objectClass>
               <objectClass
                     name="org.eclipse.emf.ecore.util.FeatureMap$Entry">
               </objectClass>
               <objectClass
                     name="org.eclipse.emf.edit.provider.IWrapperItemProvider">
               </objectClass>
            </or>
         </enablement>
      </decorator>
   </extension>

</plugin>