public:

   public:

     typedef SubUGraphAdaptor<_UGraph, NodeFilterMap, 

     typedef SubUGraphAdaptor<_UGraph, NodeFilterMap, 

                              ConstMap<typename _UGraph::UEdge, bool> > Parent;

                              ConstMap<typename _UGraph::UEdge, bool> > Parent;

     typedef _UGraph Graph;

     typedef _UGraph Graph;

   protected:

   protected:

   public:

   public:

     NodeSubUGraphAdaptor(Graph& _graph, NodeFilterMap& _node_filter_map) : 

     NodeSubUGraphAdaptor(Graph& _graph, NodeFilterMap& _node_filter_map) : 

       Parent(), const_true_map(true) { 

       Parent(), const_true_map(true) { 

       Parent::setGraph(_graph);

       Parent::setGraph(_graph);

       Parent::setNodeFilterMap(_node_filter_map);

       Parent::setNodeFilterMap(_node_filter_map);