JsonNormalizer example

        $a = new \TSantos\Serializer\NormalizerRegistry();

        $b = new \TSantos\Serializer\Normalizer\CollectionNormalizer();

        $c = new \TSantos\Serializer\EventDispatcher\EventDispatcher();
        $c->addSubscriber(new \TSantos\SerializerBundle\EventListener\StopwatchListener(new \Symfony\Component\Stopwatch\Stopwatch(true)));

        $container->services['tsantos_serializer'] = $instance = new \TSantos\Serializer\EventEmitterSerializer(new \TSantos\Serializer\Encoder\JsonEncoder(), $a, $c);

        $b->setSerializer($instance);
        $d = new \TSantos\Serializer\Normalizer\JsonNormalizer();
        $d->setSerializer($instance);

        $a->add(new \TSantos\Serializer\Normalizer\ObjectNormalizer(new \TSantos\SerializerBundle\Serializer\CircularReferenceHandler()));
        $a->add($b);
        $a->add($d);

        return $instance;
    }
}