code: public Attr createAttributeNS(String namespaceURI, String qualifiedName)
            throws DOMException
    {
  
      error(XMLErrorResources.ER_FUNCTION_NOT_SUPPORTED);
  
      return null;
    }
docs: Unimplemented. See org.w3c.dom.Document
  
  @param namespaceURI Namespace URI of the attribute
  @param qualifiedName Qualified name of the attribute
  
  @return null
  
  @throws DOMException