public function load(ObjectManager $manager)
 {
     $today = new \DateTime();
     $se = new ScheduleEntity();
     $se->setUser($this->getReference('mjh-user'));
     $se->setSchool($this->getReference('tsk_ramsey_school'));
     $se->setCategory($this->getReference('schedule_category_class'));
     $se->setLocation($this->getReference('schedule_location_Mat 1'));
     $se->setTitle('Dummy Entity');
     $se->setStartAt($today);
     $se->setEndAt($today->add(new \DateInterval('PT1H')));
     $se->setCreatedAt($today);
     $se->setLastModifiedAt($today);
     $se->setOptions(array());
     $manager->persist($se);
     $manager->flush();
 }