code: public static void assertXpathValuesEqual(String controlXpath,
                                                String testXpath,
                                                Document document)
          throws XpathException {
          assertXpathValuesEqual(controlXpath, document, testXpath, document);
      }
docs: Assert that the evaluation of two Xpaths in the same document are equal
  @param controlXpath
  @param testXpath
  @param document
  @see XpathEngine