public void should_get_all_instances_via_common_service_locator_interface()
 {
     var foo = new Foo();
     var container = new Container(x => x.For<IFoo>().Use(foo));
     IServiceLocator locator = new MaestroServiceLocator(container);
     var instances = locator.GetAllInstances<IFoo>();
     instances.Should().BeEquivalentTo(new[] { foo });
 }