public void EntityStorage()
        {
            var handler = new MockHandlerResolver(new[] {
                new HandlerMeta(typeof(TestEntity), typeof(int), 2,
                                EfficientInvoker.ForMethod(typeof(TestReceiver), "HandleSignal"))
            });
            var es     = new EntityStorage(handler);
            var entity = new TestEntity();

            RunMeasure(() => {
                var receiver = new TestReceiver();
                es.On(entity).Add(receiver);
                es.On(entity).Send(1);
                es.On(entity).Remove(receiver);
            });
        }