尝试分离NodeModel与依赖包

NodeFlow/Model/SingleFlipflopNode.cs

@@ -0,0 +1,14 @@
+using Serein.NodeFlow;
+
+namespace Serein.NodeFlow.Model
+{
+
+    public class SingleFlipflopNode : NodeBase
+    {
+        public override object Execute(DynamicContext context)
+        {
+            throw new NotImplementedException("无法以非await/async的形式调用触发器");
+        }
+
+    }
+}