public void CopyGraphTest()
        {

            var _SourceGraph = TinkerGraphFactory.CreateTinkerGraph() as IPropertyGraph;

            var _NumberOfVertices = _SourceGraph.NumberOfVertices();
            var _NumberOfEdges    = _SourceGraph.NumberOfEdges();

            var _DestinationGraph = new PropertyGraph() as IPropertyGraph;
            _SourceGraph.CopyGraph(_DestinationGraph);

            Assert.AreEqual(_NumberOfVertices, _DestinationGraph.NumberOfVertices());
            Assert.AreEqual(_NumberOfEdges,    _DestinationGraph.NumberOfEdges());

        }