public void Unsubscribe <T, TH>(string queue = null)
where T : EventBase
where TH : IEventHandler <T>
{
if (queue == null)
{
_subscriptionManager.RemoveConsumer(new EventType(typeof(T)), new EventHandlerType(typeof(TH)));
}
else
{
_subscriptionManager.RemoveConsumer(queue, new EventType(typeof(T)), new EventHandlerType(typeof(TH)));
}
}