public void testGetReferencedElement3() throws Exception {
   loadContentPackage1();
   // Organization -> should not reference anything, should return null
   Element element =
       cpCore.getElementByIdentifier(cpCore.getRootManifestElement(), CP_Package1.ORG1_ID);
   Element refElement = cpCore.getReferencedElement(element);
   assertNull("Referenced Element should be null", refElement);
 }
 public void testGetReferencedElement2() throws Exception {
   loadContentPackage1();
   // Item -> sub-Manifest
   Element element =
       cpCore.getElementByIdentifier(cpCore.getRootManifestElement(), CP_Package1.ITEM4_ID);
   Element refElement = cpCore.getReferencedElement(element);
   assertEquals(
       "Could not get referenced Element",
       CP_Package1.SUB_MANIFEST1_ID,
       refElement.getAttributeValue(CP_Core.IDENTIFIER));
 }