MatthiasMullie\Scrapbook\Adapters\Apc::unlock PHP Method

    protected function unlock($keys)
    {
        $keys = (array) $keys;
        foreach ($keys as $i => $key) {
            $keys[$i] = "scrapbook.lock.{$key}";
        }
        $this->apcu_delete($keys);
        return true;
    }