private static final String APPLICATION_NAME = "CalendarSample/1.0";
private static final Calendar calendar = GWT.create(Calendar.class);
@Override
public void onModuleLoad() {
calendar.initialize(new SimpleEventBus(),
new GoogleApiRequestTransport(APPLICATION_NAME, API_KEY));
final Button b = new Button("Authenticate to insert, update and delete an event");
b.addClickHandler(new ClickHandler() {
@Override