final auth:grest.Authenticator = ...; // see https://github.com/haxegrest/grest_core/tree/master/src/grest/auth
final calendarApi = new grest.calendar.v3.Calendar(auth);
calendarApi.calendars().get('zh_tw.hong_kong#[email protected]')
	.handle(o -> switch o {
		case Success(calendar): trace(calendar);
		case Failure(e): trace(e);
	});
calendarApi.calendarList().list({})
	.handle(o -> switch o {
		case Success(calendar): trace(calendar);
		case Failure(e): trace(e);
	});