if ($personellInstance->isDateValid($year, $month, $day) === false) {
// Something is wrong ...
throw new BirthdayInvalidException(array($year, $month, $day), self::EXCEPTION_BIRTH_DATE_IS_INVALID);
if ($personellInstance->isDateValid($year, $month, $day) === false) {
// Something is wrong ...
throw new BirthdayInvalidException(array($year, $month, $day), self::EXCEPTION_BIRTH_DATE_IS_INVALID);