<zk>
	<div apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('test.TestVM')">
		<button label="Remove &amp; Append" onClick="@command('doRemoveAppend')" />
		<div id="container">
			<button id="btn1" label="Button 1" onClick="@command('doNotify',msg=self.label,type='info',ref=self,position='at_pointer',duration=1000)" />
		</div>
	</div>
</zk>

public class TestVM {
	@Wire("#container")
	private Div container;

	@AfterCompose
	public void afterCompose(@ContextParam(ContextType.VIEW) Component view) {
		Selectors.wireComponents(view, this, false);
	}

	@Command
	public void doRemoveAppend() {
		Component c = container.getChildren().get(0);
		container.removeChild(c);
		container.appendChild(c);
	}

	@Command
	public void doNotify(@BindingParam("msg") String msg,
			@BindingParam("type") String type,
			@BindingParam("ref") Component ref,
			@BindingParam("position") String position,
			@BindingParam("duration") Integer duration) {
		Clients.showNotification(msg, type, ref, position, duration);
	}
}