static function validateStockAvatar($parameters) { return isset($parameters[Stock::AVATAR_FIELD]) && ValidateHelper::validateFileField($parameters[Stock::AVATAR_FIELD]); }
static function validateOrphanageAvatar($parameters) { return isset($parameters[Orphanage::AVATAR_FIELD]) && ValidateHelper::validateFileField($parameters[Orphanage::AVATAR_FIELD]); }