SmartGWT Tab Panel 새로고침 (re-draw) 코드

tabpanel.addSelectionHandler(new SelectionHandler<Integer>(){
	public void onSelection(SelectionEvent<Integer> event) {
    	int tabId = event.getSelectedItem();
        Widget tabWidget = tabpanel.getWidget(tabId);
        Object data = 
        	AsyncCallback.getData()tabPanel.setWidget(tabId, new Widget(data));
	}
}