public function onBeforeAddPageCommit(BeforeAddPageCommitEvent $event)
    {
        if ($event->isAborted()) {
            return;
        }

        $pageManager = $event->getContentManager();
        $templateManager = $pageManager->getTemplateManager();
        $pageRepository = $pageManager->getPageRepository();

        try {
            $languages = $this->languageRepository->activeLanguages();
            if (count($languages) > 0) {
                $result = true;
                $templateManager->getBlockRepository()->setConnection($pageRepository->getConnection());
                $pageRepository->startTransaction();
                // The min number of pages is setted to 1 because we are adding a page which has been saved but not
                // committed so it counts as one
                $ignoreRepeatedSlots = $pageManager->getValidator()->hasPages(1);
                $idPage = $pageManager->get()->getId();
                foreach ($languages as $alLanguage) {
                    $result = $templateManager->populate($alLanguage->getId(), $idPage, $ignoreRepeatedSlots);

                    if ($result === false) break;
                }

                if ($result === false) {
                    $pageRepository->rollBack();

                    $event->abort();
                } else {
                    $pageRepository->commit();
                }
            }
        } catch (\Exception $e) {
            $event->abort();
            if (isset($pageRepository) && $pageRepository !== null) {
                $pageRepository->rollBack();
            }

            throw $e;
        }
    }