public void TreeGraphTests()
        {
            GeometryGraph          graph    = GraphGenerator.GenerateFullTree(10, 3);
            SugiyamaLayoutSettings settings = new SugiyamaLayoutSettings();

            GraphGenerator.SetRandomNodeShapes(graph, random);
            WriteLine("Trying Tree Graph with Right to Left layer direction");
            LayoutAndValidate(graph, settings, LayerDirection.RightToLeft);
            GraphGenerator.SetRandomNodeShapes(graph, random);
            WriteLine("Trying Tree Graph with Bottom to Top layer direction");
            LayoutAndValidate(graph, settings, LayerDirection.BottomToTop);
        }