public IActionResult Index()
        {
            var model = new LifetimeTestViewModel();

            model.TransientDescription = _sampleTransientService.GetServiceInformation();
            model.SingletonDescription = _sampleSingletonService.GetServiceInformation();
            model.ScopedDescription    = _sampleScopedService.GetServiceInformation();
            return(View("Index", model));
        }