private function UDB3Media($document)
    {
        $media = [];

        if ($document) {
            $item = $document->getBody();
            // At the moment we do not include any media coming from UDB2.
            // If the mediaObject property contains data it's coming from UDB3.
            $item->mediaObject = isset($item->mediaObject) ? $item->mediaObject : [];
        }

        return $media;
    }