examples/org.eclipse.emf.ecp.makeithappen.model/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>

   <extension
         name=""
         point="org.eclipse.emf.ecore.generated_package">
      <package
            genModel="model/task.genmodel"
            uri="http://eclipse/org/emf/ecp/makeithappen/model/task"
            class="org.eclipse.emf.ecp.makeithappen.model.task.TaskPackage">
      </package>
   </extension>

</plugin>