protected override QilNode VisitNodeRange(QilBinary ndRange) {
CreateFilteredIterator(ndRange.Left, "$$$iterRange", typeof(NodeRangeIterator), XmlILMethods.NodeRangeCreate, XmlILMethods.NodeRangeNext,
XmlNodeKindFlags.Any, null, TriState.Unknown, ndRange.Right);
return ndRange;
}