services:
    service_container:
        class: Symfony\Component\DependencyInjection\ContainerInterface
        public: true
        synthetic: true
    foo:
        class: Foo
        public: true
        autowire: true
    Psr\Container\ContainerInterface:
        alias: service_container
        public: false
    Symfony\Component\DependencyInjection\ContainerInterface:
        alias: service_container
        public: false