public function load(ObjectManager $manager)
 {
     $data = $this->container->get('ilioscore.dataloader.programYearSteward')->getAll();
     foreach ($data as $arr) {
         $entity = new ProgramYearSteward();
         $entity->setId($arr['id']);
         $entity->setSchool($this->getReference('schools' . $arr['school']));
         $entity->setDepartment($this->getReference('departments' . $arr['department']));
         $entity->setProgramYear($this->getReference('programYears' . $arr['programYear']));
         $manager->persist($entity);
         $this->addReference('programYearStewards' . $arr['id'], $entity);
     }
     $manager->flush();
 }