Mostly working, double invocation of dialogue progression

Assets/Editor/Dialogue/DialogueNodes.cs

@@ -193,4 +193,17 @@ namespace Editor.Dialogue
             context.AddInputPort<bool>($"{LoopThroughForbiddenItemLinesOptionName}").WithDisplayName("Loop Through Forbidden Item Lines?").Build();
         }
     }
+    
+    [Serializable]
+    public class WaitOnCombination : DialogueNode
+    {
+        const string RequiredResultItemOptionName = "RequiredResultItem";
+        
+        protected override void OnDefinePorts(IPortDefinitionContext context)
+        {
+            context.AddInputPort<PickupItemData>(RequiredResultItemOptionName).WithDisplayName("Required Result Item").Build();
+            
+            base.OnDefinePorts(context);
+        }
+    }
 }