Contao\CoreBundle\Framework\ContaoFrameworkInterface::getAdapter PHP Method

    public function getAdapter($class);

 /**
  * Returns the event model.
  *
  * @param Request $request The request object
  *
  * @return CalendarEventsModel|null The event model or null
  */
 private function getEventModel(Request $request)
 {
     if (!$request->query->has('calendar')) {
         return null;
     }
     /** @var CalendarEventsModel $adapter */
     $adapter = $this->framework->getAdapter('Contao\\CalendarEventsModel');
     return $adapter->findByPk($request->query->get('calendar'));
 }