plugins/org.eclipse.xsd/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
  <extension point="org.eclipse.emf.ecore.generated_package">
    <package uri="http://www.eclipse.org/xsd/2002/XSD" class="org.eclipse.xsd.XSDPackage" genModel="model/XSD.genmodel" />
  </extension>

  <extension point="org.eclipse.emf.ecore.extension_parser">
    <parser type="xsd" class="org.eclipse.xsd.util.XSDResourceFactoryImpl" />
  </extension>

  <extension point="org.eclipse.team.core.fileTypes">
    <fileTypes extension="xsd" type="text" />
  </extension>

  <extension id="diagnostic" name="%_UI_XMLSchemaDiagnostic_marker" point="org.eclipse.core.resources.markers">
    <super type="org.eclipse.core.resources.problemmarker" />
    <persistent value="true" />
    <attribute name="diagnostic" />
  </extension>
</plugin>