Added IExecutable and ISlotContainer interface.

Changed SlotContainerNode to ExecutableNode

Sample/Runtime/Models/Nodes/Add.cs

@@ -5,7 +5,7 @@ using Misaki.GraphView.Editor;
 namespace Misaki.GraphView.Sample
 {
     [NodeInfo("Add", "Math")]
-    public class AddNode : BackTraceNode
+    public class Add : BackTraceExecutableNode
     {
         [NodeInput]
 #if UNITY_EDITOR

Sample/Runtime/Models/Nodes/BaseClasses/BackTraceExecutableNode.cs

@@ -1,6 +1,6 @@
 namespace Misaki.GraphView.Sample
 {
-    public abstract class BackTraceNode : SlotContainerNode
+    public abstract class BackTraceExecutableNode : ExecutableNode
     {
         protected override void OnPullData(Slot input)
         {
@@ -10,7 +10,10 @@ namespace Misaki.GraphView.Sample
             }
             
             var outputNode = GraphObject.GetNode(input.LinkedSlotData[0].nodeID);
-            outputNode.Execute();
+            if (outputNode is IExecutable executable)
+            {
+                executable.Execute();
+            }
         }
     }
 }

Sample/Runtime/Models/Nodes/Output.cs

@@ -3,7 +3,7 @@ using UnityEngine;
 namespace Misaki.GraphView.Sample
 {
     [NodeInfo("Output Node", "Output")]
-    public class OutputNode : BackTraceNode
+    public class Output : BackTraceExecutableNode
     {
         [NodeInput]
         private float _input;