public IHaveFulfilledSubscriptionRequirements WithMessageHandler <T>(IHandlerResolver handlerResolver) where T : Message
        {
            var thing = _subscriptionConfig.SubscriptionType == SubscriptionType.PointToPoint
                ? PointToPointHandler <T>()
                : TopicHandler <T>();

            Bus.SerialisationRegister.AddSerialiser <T>(_serialisationFactory.GetSerialiser <T>());
            if (!handlerResolver.ResolveHandlers <T>().Any())
            {
                throw new HandlerNotRegisteredWithContainerException(string.Format("IHandler<{0}> is not regsistered in the container.", typeof(T).Name));
            }
            if (handlerResolver.ResolveHandlers <T>().Count() > 1)
            {
                throw new NotSupportedException(string.Format("There are more than one registration for IHandler<{0}>. JustSaying currently does not support multiple registration for IHandler<T>.", typeof(T).Name));
            }

            foreach (var region in Bus.Config.Regions)
            {
                Bus.AddMessageHandler(region,
                                      _subscriptionConfig.QueueName,
                                      () => handlerResolver.ResolveHandlers <T>().Single());
            }


            Log.Info(string.Format("Added a message handler - Topic: {0}, QueueName: {1}, HandlerName: IHandler<{2}>", _subscriptionConfig.Topic, _subscriptionConfig.QueueName, typeof(T)));

            return(thing);
        }