public void CoreDispatcher_RemoveHandlerFromDispatcher_EventHandler()
        {
            var h = new TestEventHandler();

            CoreDispatcher.AddHandlerToDispatcher(h);

            var all = CoreDispatcher.TryGetHandlersForEventType(typeof(TestEvent));

            all.Should().HaveCount(1);

            CoreDispatcher.RemoveHandlerFromDispatcher(h);

            all = CoreDispatcher.TryGetHandlersForEventType(typeof(TestEvent));
            all.Should().HaveCount(0);
        }