public class XmlNamedNodeMap : IEnumerable {
// Public Instance Properties
   public virtual int Count{get; } 
// Public Instance Methods
   public virtual IEnumerator GetEnumerator( );                        // implements IEnumerable
   public virtual XmlNode GetNamedItem( string name);  
   public virtual XmlNode GetNamedItem( string localName, string namespaceURI);  
   public virtual XmlNode Item( int index);  
   public virtual XmlNode RemoveNamedItem( string name);  
   public virtual XmlNode RemoveNamedItem( string localName, string namespaceURI);  
   public virtual XmlNode SetNamedItem( XmlNode node);  
}