ContainerAware deprecated

[Chrysweel]

• f943eee <https://github.com/symfony/symfony-docs/commit/f943eee70cf81b90a598d94f400a3723216fe726>_ #4009 Remove "Controllers extends ContainerAware" best practice (tgalopin)
• #5888 <https://github.com/symfony/symfony-docs/pull/5888>_ Removed the use of ContainerAware class (javiereguiluz)

I understand that now the controller can extends of Controller instead of ContainerAware

use Symfony\Bundle\FrameworkBundle\Controller\Controller;

https://github.com/symfony/symfony-docs/search?utf8=%E2%9C%93&q=ContainerAware