public static void RegisterComponents()
        {
            var container = new UnityContainer();

            // register all your components with the container here
            // it is NOT necessary to register your controllers
            container.RegisterType <IFactory, Factory>();
            container.AddRepositoryRegistry();
            container.AddDomainRegistry();
            // e.g. container.RegisterType<ITestService, TestService>();

            GlobalConfiguration.Configuration.DependencyResolver = new UnityDependencyResolver(container);
        }