private function insertOneRegistration(\Pimple $DI, EntityManager $em, User $user, \collection $collection, $when, $name)
{
$em->getEventManager()->removeEventSubscriber(new TimestampableListener());
$registration = new Registration();
$registration->setCollection($collection);
$registration->setUser($user);
$registration->setUpdated(new \DateTime($when));
$registration->setCreated(new \DateTime($when));
$em->persist($registration);
$em->flush();
$em->getEventManager()->addEventSubscriber(new TimestampableListener());
$DI[$name] = $registration;
}
