Untitled

            graph.ClassWorkflowNode.Where(s => s.InicioFloxo).ToList().ForEach(s =>
            {
                if (String.IsNullOrEmpty(s.Label))
                    s.Label = "Inicio_" + nSeqId++.ToString();
            });

            graph.ClassWorkflowNode.Where(s => s.FimFluxo).ToList().ForEach(s =>
            {
                if (String.IsNullOrEmpty(s.Label))
                    s.Label = "Fim_" + nSeqId++.ToString();
            });