public void MakeSankeyChart([NotNull][ItemNotNull] List <SingleSankeyArrow> arrow)
        {
            var helper = new ZZ_Sankeyhelper(MyLogger, arrow.First().MyStage);

            AddThread(arrow[0].ArrowName, () => helper.Run(arrow), arrow[0].FullPngFileName());
        }
        public void MakeSankeyChart([NotNull] SingleSankeyArrow arrow)
        {
            var helper = new ZZ_Sankeyhelper(MyLogger, arrow.MyStage);

            helper.Run(arrow);
        }