$userapt = $user->getApartments()->getIterator();

    while ($userapt->valid()) {
      echo  ($userapt->key() . ' => ' . $userapt->current()) . "n";

        $userapt->next();
    }

    $useraptName = $user->getApartment()->getIterator();

    while ($useraptName->valid()) {
        ($useraptName->key() . ' => ' . var_dump($useraptName->current()) . "n");
        $useraptName->next();
    }