public function cleanUp()
{
$finder = new Finder();
$finder->files()->in($this->queuePath)->ignoreDotFiles(true)->ignoreUnreadableDirs(true)->ignoreVCS(true)->depth('< 2')->name('*.json');
$finder->date(sprintf('< %d seconds ago', $this->options['message_expiration']));
/** @var SplFileInfo $file */
foreach ($finder as $file) {
@unlink($file->getRealPath());
}
}