jpa/plugins/org.eclipse.jpt.eclipselink.ui/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>

   <extension
         point="org.eclipse.jpt.ui.jpaPlatform">
      <jpaPlatform
            class="org.eclipse.jpt.eclipselink.ui.internal.platform.EclipseLinkPlatformUI"
            id="org.eclipse.eclipselink.platform">
      </jpaPlatform>
   </extension>

</plugin>