plugins/org.eclipse.sirius.ui/resources/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
  <extension point="org.eclipse.sirius.componentization">
    <component class="%packageName.Activator"
               id="%pluginId"
	       name="%modelName">
    </component>
  </extension>
</plugin>