public async Task <IActionResult> Index()
        {
            ViewBag.Canvas = (List <EntityNodeConfiguration>) await _visualService.GetNodePlottingGeometry(new Guid("822934B2-5EBE-4B47-843F-2423B20292F8"));

            //ViewBag.Canvas = (StraightConnectionLineViewModel) await _visualService.GetLinePlottingGeometry(new Guid("822934B2-5EBE-4B47-843F-2423B20292F8"));
            return(View());
        }