/**
* Add the before selection handler to the tabbed panel.
*
* <p>Wrapper function for {@link
* com.google.gwt.user.client.ui.TabLayoutPanel#addBeforeSelectionHandler(BeforeSelectionHandler)}
*
* @param handler the before selection handler
* @return the registration for the event
*/
public HandlerRegistration addBeforeSelectionHandler(BeforeSelectionHandler<Integer> handler) {
return m_tabPanel.addBeforeSelectionHandler(handler);
}
