public function handleUnpublish(UnpublishEvent $event)
    {
        $document = $event->getDocument();
        if (!$document instanceof ArticleDocument) {
            return;
        }

        $this->liveIndexer->remove($document);
        $this->liveIndexer->flush();

        $this->indexer->setUnpublished($document->getUuid(), $event->getLocale());
        $this->indexer->flush();
    }