Symfony 3.4: Prefix all controller route names

[Haehnchen]

see http://symfony.com/blog/new-in-symfony-3-4-prefix-all-controller-route-names / symfony/symfony#24031

/**
 * @Route("/blog", name="blog_")
 */
class BlogController extends Controller
{
    /**
     * @Route("/", defaults={"page": "1"}, name="index")
     * @Route("/page/{page}", name="index_paginated")
     */
    public function indexAction($page, $_format) { ... }

    /**
     * @Route("/posts/{slug}", name="post")
     */
    public function showAction(Post $post) { ... }
}