public function getOverviewPage()
    {
        /** @var EntityRepository $repository */
        $repository = $this->em->getRepository($this->getOverviewPageClass());

        $overviewPage = $repository->createQueryBuilder('o')
            ->orderBy('o.id', 'DESC')
            ->setMaxResults(1)
            ->getQuery()
            ->getOneOrNullResult();

        return $overviewPage;
    }