/**
  * {@inheritDoc}
  */
 public function load(ObjectManager $manager)
 {
     // Generate 20 access codes
     $faker = new Generator();
     $faker->addProvider(new Base($faker));
     for ($i = 0; $i < 20; $i++) {
         $code = new StudentAccessCode();
         $code->setCode($faker->randomNumber(8));
         $manager->persist($code);
     }
     $manager->flush();
 }