code: public String getNodeNameX(int nodeHandle)
    {
  
      /** @todo: implement this org.apache.xml.dtm.DTMDefaultBase abstract method */
      error(XMLMessages.createXMLMessage(XMLErrorResources.ER_METHOD_NOT_SUPPORTED, null));//"Not yet supported!");
  
      return null;
    }
docs: Given a node handle, return the XPath node name.  This should be
  the name as described by the XPath data model, NOT the DOM-style
  name.
  
  @param nodeHandle the id of the node.
  @return String Name of this node, which may be an empty string.