```yaml App\TwigExtension: tags: [twig.extension] tags: - twig.extension ``` http://symfony.com/blog/new-in-symfony-3-3-added-new-shortcut-methods https://github.com/symfony/symfony/pull/20651
http://symfony.com/blog/new-in-symfony-3-3-added-new-shortcut-methods
symfony/symfony#20651