mutable std::vector<IdNodePair> mNodeContainer; ///< Used to store cached pointers to already searched for Nodes.
mutable IdNodePair mLastCachedIdNodePair; ///< Used to cache the last retrieved id-node pair.
mutable std::vector<IdNodePair> mNodeContainer; ///< Used to store cached pointers to already searched for Nodes.
mutable IdNodePair mLastCachedIdNodePair; ///< Used to cache the last retrieved id-node pair.