/// \brief The type of the map that stores the dists of the nodes.

     /// \brief The type of the map that stores the dists of the nodes.

     typedef typename _Traits::DistMap DistMap;

     typedef typename _Traits::DistMap DistMap;

     /// \brief The operation traits.

     /// \brief The operation traits.

     typedef typename _Traits::OperationTraits OperationTraits;

     typedef typename _Traits::OperationTraits OperationTraits;

     /// \brief The Node weight map.

     /// \brief The Node weight map.

   private:

   private:

     /// Pointer to the underlying graph

     /// Pointer to the underlying graph

     const Graph *graph;

     const Graph *graph;

     /// Pointer to the length map

     /// Pointer to the length map

     const LengthMap *length;

     const LengthMap *length;