/**
  * Transform contact to transient data
  *
  * @param Contact $contact
  * @returns array
  */
 public static function toTransient(Contact $contact)
 {
     $supervisor = $contact->getSupervisor();
     return ['id' => $contact->getId(), 'title' => $contact->getTitle(), 'name' => $contact->getName(), 'email' => $contact->getEmail(), 'supervisor' => $supervisor ? self::toTransient($supervisor) : null, 'supervised_contacts' => self::listToTransient($contact->getSupervisedContacts())];
 }