public function load($key, \DateTimeInterface $updatedAt = null)
    {
        $keyGen = $this->generateKey($key);
        $updateDate = $this->cache->load($keyGen);

        if ($updateDate === null || $updateDate != $updatedAt) {
            if ($updateDate) {
                $this->remove($key);
            }
            return null;
        }

        return $this->getFilePath($keyGen);
    }