getFoo_BazService example

        return $container->services['b_service'] = ($container->privates['a_factory'] ??= new \Bar())->getBar();
    }

    /** * Gets the public 'bar' shared service. * * @return \Bar\FooClass */
    protected static function getBar3Service($container)
    {
        $a = ($container->services['foo.baz'] ?? self::getFoo_BazService($container));

        $container->services['bar'] = $instance = new \Bar\FooClass('foo', $a, $container->getParameter('foo_bar'));

        $a->configure($instance);

        return $instance;
    }

    /** * Gets the public 'bar2' shared service. * * @return \stdClass */

        return $container->services['b_service'] = ($container->privates['a_factory'] ??= new \Bar())->getBar();
    }

    /** * Gets the public 'bar' shared service. * * @return \Bar\FooClass */
    protected static function getBar3Service($container)
    {
        $a = ($container->services['foo.baz'] ?? self::getFoo_BazService($container));

        $container->services['bar'] = $instance = new \Bar\FooClass('foo', $a, 'foo_bar');

        $a->configure($instance);

        return $instance;
    }

    /** * Gets the public 'bar2' shared service. * * @return \stdClass */