XMLSerializer serializer = new XMLSerializer(System.err, format);
System.err.println();
serializer.serialize((Document) node);
CachedXPathAPI cachedXPathAPI = new CachedXPathAPI();
NodeIterator iterator = cachedXPathAPI.selectNodeIterator(node, "//*[local-name() = 'userId']");
Element root = (Element) iterator.nextNode();
QName qname = DOMUtil.createQName(root, root.getAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "type"));
assertEquals("http://www.w3.org/2001/XMLSchema", qname.getNamespaceURI());
assertEquals("string", qname.getLocalPart());