Document inDocument = XMLUnit.buildControlDocument(inXMLString); assertXpathNotExists(xPathExpression, inDocument);
assertXpathNotExists(xPathExpression, inXMLString, null);
    public static void assertXpathNotExists(String xPathExpression,     String inXMLString)         throws IOException, SAXException, XpathException {        Document inDocument = XMLUnit.buildControlDocument(inXMLString);        assertXpathNotExists(xPathExpression, inDocument);    }