APIUtilityVerifier InternalCallVerifier EqualityVerifier NullVerifier HybridVerifier 

@Test public void testXpathDocFunction() throws Exception {
  URL url=getClass().getResource("/xpath20/variables.xml");
  OXPath20ExpressionBPEL20 exp=compile("doc('" + url.toExternalForm() + "')");
  Node retVal=_runtime.evaluateNode(exp,this);
  assertNotNull(retVal);
  assertEquals("Unexpected root node","variables",retVal.getNodeName());
}