private AutoGraphAsset BuildTrivialGraph()
        {
            AutoGraphAsset graph = new AutoGraphAsset();

            StartNode     startNode = new StartNode();
            EndDialogNode endNode   = new EndDialogNode();

            NodePort inPort  = startNode.GetOutputPort("Output");
            NodePort outPort = endNode.GetInputPort("Input");

            inPort.AddConnections(outPort);

            return(graph);
        }