protected function getLockout()
    {
        if (!$this->lockout || !$this->lockout instanceof LockoutStorage) {
            $lockout = $this->getOption(self::OPTION_LOCKOUT_STORAGE);
            $this->lockout = ($lockout and class_exists($lockout)) ? new $lockout : new RdfLockoutStorage();
        }

        return $this->lockout;
    }