// create an assertion object
XSAssertImpl assertImpl = new XSAssertImpl(enclosingCT,
annotations,
fSchemaHandler);
Test testExpr = new Test(new XPath20Assert(test, fSymbolTable,
schemaDoc.fNamespaceSupport), assertImpl);
assertImpl.setTest(testExpr);
assertImpl.setXPathDefaultNamespace(xpathDefaultNamespace);
assertImpl.setXPath2NamespaceContext(schemaDoc.fNamespaceSupport);
String assertMessage = assertElement.getAttributeNS(