622       Node source(Arc) const { return INVALID; } | 
   622       Node source(Arc) const { return INVALID; } | 
   623   | 
   623   | 
   624       /// \brief Target node of the directed arc.  | 
   624       /// \brief Target node of the directed arc.  | 
   625       Node target(Arc) const { return INVALID; } | 
   625       Node target(Arc) const { return INVALID; } | 
   626   | 
   626   | 
         | 
   627       /// \brief Returns the id of the node.  | 
         | 
   628       int id(Node) const { return -1; }  | 
         | 
   629   | 
         | 
   630       /// \brief Returns the id of the edge.  | 
         | 
   631       int id(Edge) const { return -1; }  | 
         | 
   632   | 
         | 
   633       /// \brief Returns the id of the arc.  | 
         | 
   634       int id(Arc) const { return -1; }  | 
         | 
   635   | 
         | 
   636       /// \brief Returns the node with the given id.  | 
         | 
   637       ///  | 
         | 
   638       /// \pre The argument should be a valid node id in the graph.  | 
         | 
   639       Node nodeFromId(int) const { return INVALID; }  | 
         | 
   640   | 
         | 
   641       /// \brief Returns the edge with the given id.  | 
         | 
   642       ///  | 
         | 
   643       /// \pre The argument should be a valid edge id in the graph.  | 
         | 
   644       Edge edgeFromId(int) const { return INVALID; }  | 
         | 
   645   | 
         | 
   646       /// \brief Returns the arc with the given id.  | 
         | 
   647       ///  | 
         | 
   648       /// \pre The argument should be a valid arc id in the graph.  | 
         | 
   649       Arc arcFromId(int) const { return INVALID; }  | 
         | 
   650   | 
         | 
   651       /// \brief Returns an upper bound on the node IDs.  | 
         | 
   652       int maxNodeId() const { return -1; }  | 
         | 
   653   | 
         | 
   654       /// \brief Returns an upper bound on the edge IDs.  | 
         | 
   655       int maxEdgeId() const { return -1; }  | 
         | 
   656   | 
         | 
   657       /// \brief Returns an upper bound on the arc IDs.  | 
         | 
   658       int maxArcId() const { return -1; }  | 
         | 
   659   | 
   627       void first(Node&) const {} | 
   660       void first(Node&) const {} | 
   628       void next(Node&) const {} | 
   661       void next(Node&) const {} | 
   629   | 
   662   | 
   630       void first(Edge&) const {} | 
   663       void first(Edge&) const {} | 
   631       void next(Edge&) const {} | 
   664       void next(Edge&) const {} | 
   637       void nextOut(Arc&) const {} | 
   670       void nextOut(Arc&) const {} | 
   638   | 
   671   | 
   639       void firstIn(Arc&, Node) const {} | 
   672       void firstIn(Arc&, Node) const {} | 
   640       void nextIn(Arc&) const {} | 
   673       void nextIn(Arc&) const {} | 
   641   | 
   674   | 
   642   | 
         | 
   643       void firstInc(Edge &, bool &, const Node &) const {} | 
   675       void firstInc(Edge &, bool &, const Node &) const {} | 
   644       void nextInc(Edge &, bool &) const {} | 
   676       void nextInc(Edge &, bool &) const {} | 
         | 
   677   | 
         | 
   678       // The second parameter is dummy.  | 
         | 
   679       Node fromId(int, Node) const { return INVALID; } | 
         | 
   680       // The second parameter is dummy.  | 
         | 
   681       Edge fromId(int, Edge) const { return INVALID; } | 
         | 
   682       // The second parameter is dummy.  | 
         | 
   683       Arc fromId(int, Arc) const { return INVALID; } | 
         | 
   684   | 
         | 
   685       // Dummy parameter.  | 
         | 
   686       int maxId(Node) const { return -1; }  | 
         | 
   687       // Dummy parameter.  | 
         | 
   688       int maxId(Edge) const { return -1; }  | 
         | 
   689       // Dummy parameter.  | 
         | 
   690       int maxId(Arc) const { return -1; }  | 
   645   | 
   691   | 
   646       /// \brief Base node of the iterator  | 
   692       /// \brief Base node of the iterator  | 
   647       ///  | 
   693       ///  | 
   648       /// Returns the base node (the source in this case) of the iterator  | 
   694       /// Returns the base node (the source in this case) of the iterator  | 
   649       Node baseNode(OutArcIt e) const { | 
   695       Node baseNode(OutArcIt e) const { |