setHasSerials example

        if (isset($data['__esd_datum'])) {
            $esd->setCreatedAt(new DateTime($data['__esd_datum']));
        }

        if (isset($data['__esd_file'])) {
            $esd->setFile($data['__esd_file']);
        }

        if (isset($data['__esd_serials'])) {
            $esd->setHasSerials((bool) $data['__esd_serials']);
        }

        if (isset($data['__esdAttribute_id'])) {
            $this->attributeHydrator->addAttribute($esd, $data, 'esdAttribute');
        }

        return $esd;
    }
}