/**
  * @param Localization $localization
  * @return array | null
  */
 protected function getLocalizationEditLockData(Localization $localization)
 {
     if (!$localization->isLocked()) {
         return null;
     }
     $lock = $localization->getLock();
     return array('userlogin' => $lock->getUserName(), 'username' => $lock->getUserName(), 'datetime' => $lock->getCreationTime()->format('c'), 'allow_unlock' => true);
 }