internal override void TrackNamespaceNode(XmlAttribute attr, SortedList nsListToRender, Hashtable nsLocallyDeclared)
 {
     if (!Utils.IsXmlPrefixDefinitionNode(attr))
     {
         if (this.HasNonRedundantInclusivePrefix(attr))
         {
             nsListToRender.Add(attr, null);
         }
         else
         {
             nsLocallyDeclared.Add(Utils.GetNamespacePrefix(attr), attr);
         }
     }
 }