public function getPhotoSourceFile()
    {
        $objectManager = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\Object\ObjectManager::class);
        return $objectManager->get(\RGU\Dvoconnector\Service\ImageService::class)->getCachedFile($this->getPhotoSource());
    }