const vector<Bitset> & getBitsetsArray(const Node * node, const Node * neighbor) const { return _nodeData[node].getBitsetsArrayForNeighbor(neighbor);
const vector<Bitset> & getBitsetsArray() const { return _leafBitsets;
		const vector<Bitset> & getBitsetsArray(const Node * node, const Node * neighbor) const		{ 			return _nodeData[node].getBitsetsArrayForNeighbor(neighbor);		}