gistfile1.txt

            var tree = new Y.ParentWidget({
               id: "tree"
            });

            // tree.plug(Y.SM.Plugin.WidgetParentRenderQueue, {timeout:2000});

            tree.render();

            tree.add({ type: Y.ChildWidget, id: "leaf-2", label: "Leaf Two" }, 1);
            tree.add({ type: Y.ChildWidget, id: "leaf-1", label: "Leaf One" }, 0);
            tree.add({ type: Y.ChildWidget, id: "leaf-3", label: "Leaf Three" }, 2);