interface NamedNodeMap {
  Node               getNamedItem(in DOMString name);
  Node               setNamedItem(in Node arg)
                                      raises(DOMException);
  Node               removeNamedItem(in DOMString name)
                                      raises(DOMException);
  Node               item(in unsigned long index);
  readonly attribute unsigned long    length;
  // Introduced in DOM Level 2:
  Node               getNamedItemNS(in DOMString namespaceURI, 
                                    in DOMString localName);
  // Introduced in DOM Level 2:
  Node               setNamedItemNS(in Node arg)
                                      raises(DOMException);
  // Introduced in DOM Level 2:
  Node               removeNamedItemNS(in DOMString namespaceURI, 
                                       in DOMString localName)
                                      raises(DOMException);
};