public static void LoadGml(this IGraph graph, string directory)
        {
            if (graph == null)
            {
                throw new ArgumentNullException(nameof(graph));
            }

            GmlReader.InputGraph(graph, string.Concat(directory, GraphFileGml));
        }
 public override void LoadGraphData(TinkerGrapĥ tinkerGrapĥ, string directory)
 {
     GmlReader.InputGraph(tinkerGrapĥ, string.Concat(directory, GraphFileGml));
 }