[https://github.com/symfony/symfony/blob/49b6ab853d81e941736a1af67845efa3401e7278/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php#L723 which isn't protected](https://github.com/symfony/symfony/blob/49b6ab853d81e941736a1af67845efa3401e7278/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php#L723 which isn't protected)
