public static Item AppendItems(Vector2 mousePos, Graph graph, IOutlet <object> clickedOutlet, int priority = 4)
        /// Item set appeared on node or outlet click
        {
            Item addItems = null;

            if (clickedOutlet != null)
            {
                Type genericLinkType = Generator.GetGenericType(clickedOutlet);
                if (genericLinkType == null)
                {
                    throw new Exception("Could not find category " + clickedOutlet.GetType().ToString());
                }

                Item createItems = CreateItems(mousePos, graph);
                addItems = createItems.Find(GetCategoryByType(genericLinkType));
            }

            if (addItems != null && addItems.subItems != null)
            {
                Item initial = addItems.Find("Initial");
                if (initial != null)
                {
                    initial.disabled = true;
                }

                //adding link to all create actions
                foreach (Item item in addItems.All(true))
                {
                    if (item.onClick != null)
                    {
                        Action baseOnClick = item.onClick;
                        item.onClick = () =>
                        {
                            baseOnClick();

                            Generator createdGen = graph.generators[graph.generators.Length - 1];                           //the last on is the one that's just created. Hacky

                            Vector2 pos = clickedOutlet.Gen.guiPosition + new Vector2(200, 0);
                            GeneratorDraw.FindPlace(ref pos, new Vector2(100, 200), GraphWindow.current.graph);
                            createdGen.guiPosition = pos;

                            graph.AutoLink(createdGen, clickedOutlet);

                            GraphWindow.RefreshMapMagic(createdGen);
                        };
                    }
                }
            }
            else
            {
                addItems          = new Item("Add");
                addItems.onDraw   = RightClick.DrawItem;
                addItems.disabled = true;
            }

            addItems.name     = "Add (Append)";
            addItems.icon     = RightClick.texturesCache.GetTexture("MapMagic/Popup/Create");
            addItems.color    = Color.gray;
            addItems.priority = priority;

            return(addItems);
        }