* Added `Symfony\Bundle\FrameworkBundle\Controller\ControllerTrait` (requires PHP 7). Unlike the `Symfony\Bundle\FrameworkBundle\Controller\Controller`

class, this trait does not have access to the dependency injection container. Its dependencies are explicitly and lazily

injected using getter injection.

`render()`, `renderView()` and `stream()` methods can only use Twig (using the Templating component is not supported).

The `json()` method requires the Serializer component (use `Symfony\Component\HttpFoundation\JsonResponse` directly if

you do not want to use the Serializer).