parameters: foo: Foo bar: Bar services: service_container: class: Symfony\Component\DependencyInjection\ContainerInterface public: true synthetic: true Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo: class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo public: true arguments: ['@bar'] bar: class: Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\Foo public: true calls: - [setFoo, { }]