<window apply="TestComposer">
    <pivottable id="pivot" tooltip="test"/>
    <menupopup id="test">
        <menuitem label="menu item"/>
    </menupopup>
</window>

public class TestComposer extends SelectorComposer<Window> {
    // omit model creation code

    @Listen("onPivotTooltip = #pivot")
    public void doPivotTooltip(PivotUIEvent event) {
      // do nothing
    }
}