private function clean()
    {
        foreach (Finder::find($this->namespace . '*')->from($this->tempDir)->childFirst() as $entry) {
            $path = (string)$entry;
            if ($entry->isDir()) {
                //We dont use dirs, ignore
                continue;
            }

            $updateDate = $this->cache->load($entry->getFilename());
            if ($updateDate === null) {
                @unlink($path);
            }
        }

        return;
    }