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();
}