public function doIndexingRunAction()
    {
        /** @var $indexService \ApacheSolrForTypo3\Solr\Domain\Index\IndexService */
        $indexService = GeneralUtility::makeInstance(IndexService::class, /** @scrutinizer ignore-type */ $this->selectedSite);
        $indexWithoutErrors = $indexService->indexItems(10);

        $label = 'solr.backend.index_queue_module.flashmessage.success.index_manual';
        $severity = FlashMessage::OK;
        if (!$indexWithoutErrors) {
            $label = 'solr.backend.index_queue_module.flashmessage.error.index_manual';
            $severity = FlashMessage::ERROR;
        }

        $this->addFlashMessage(
            LocalizationUtility::translate($label, 'Solr'),
            LocalizationUtility::translate('solr.backend.index_queue_module.flashmessage.index_manual', 'Solr'),
            $severity
        );

        $this->redirect('index');
    }