/**
* @NoAdminRequired
*/
public function getEditFormCalendar()
{
$calId = (int) $this->params('calendarid');
$calendar = CalendarApp::getCalendar($calId, true, true);
$params = ['new' => false, 'calendar' => $calendar, 'calendarcolor_options' => CalendarCalendar::getCalendarColorOptions()];
$response = new TemplateResponse($this->appName, 'part.editcalendar', $params, '');
return $response;
}