code: public static boolean isXInclude(final QName qname)
      {
          return XINCLUDE_QNAME.getLocalPart().equals(qname.getLocalPart()) &&
                 (Strings.isNullOrEmpty(qname.getNamespaceURI()) ||
                 XINCLUDE_QNAME.getNamespaceURI().equals(qname.getNamespaceURI()));
      }
docs: Return if element is a Xinclude element or not
  
  @param qname of the element to test
  @return true if element is a xinclude element, false otherwise