<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.emf.validation.constraintProviders">
      <category
            id="category.parent"
            mandatory="false"
            name="Parent Rules">
		    <category
		       id="category.child"
		       mandatory="false"
		       name="Child Rules">
		 	</category>
      </category>
      <constraintProvider
            cache="true">
         <constraints
               categories="category.parent">
            <constraint
                  id="parent.child"
                  isEnabledByDefault="true"
                  lang="parent.child"
                  mode="Batch"
                  name="ParentConstraint"
                  severity="ERROR"
                  statusCode="parent.child">
               <message>
                  message body text
               </message>
            </constraint>
         </constraints>
         <constraints
               categories="category.child">
            <constraint
                  id="constraint.child"
                  isEnabledByDefault="true"
                  lang="constraint.child"
                  mode="Batch"
                  name="ChildConstraint"
                  severity="ERROR"
                  statusCode="constraint.child">
               <message>
                  message body text
               </message>
            </constraint>
         </constraints>
         <package
               namespaceUri="package">
         </package>
      </constraintProvider>
   </extension>
   <extension
         point="org.eclipse.emf.validation.constraintBindings">
      <clientContext
            id="context.default">
         <selector
               class="GuidelinesSelector">
         </selector>
      </clientContext>
      <binding
            category="category.parent"
            context="context.default">
      </binding>
      <binding
            category="category.child"
            context="context.default">
      </binding>
   </extension>

</plugin>