<window title="Tree Model with ROD" border="normal"
	apply="org.zkoss.zktest.test2.tree.TreeClickComposer">
	<tree id="tree" onSelect=""></tree>
	1. Please <button label="click to setModel" id="btn2"></button>
	<separator/>
	2. Please click this button to
	<button label="remove item3" >
	<attribute name="onClick">
		TreeModel model = tree.getModel();
		((DefaultTreeNode)model.getChild(model.getRoot(), 0)).remove(3);
	</attribute>
	</button>
	<separator/>
	3. You should's not see open/close icon disappeared.
</window>