public function flush()
    {
        if (!$this->hasConnection()) {
            // @codeCoverageIgnoreStart
            return false;
            // @codeCoverageIgnoreEnd
        }

        try {
            return $this->memcache->flush();
            // @codeCoverageIgnoreStart
        } catch (\Exception $e) {
        }

        return false;
        // @codeCoverageIgnoreEnd
    }