/// <summary>
///
/// </summary>
/// <param name="handler"></param>
public SubscribeInfo(Func <object> handler) : this(ObserverHandler.CreateA <object>(handler))
{
}
/// <summary>
///
/// </summary>
/// <param name="bus"></param>
/// <param name="topic">消息主题</param>
/// <param name="handler">处理器</param>
public static void Unsubscribe(this IMessageBus bus, string topic, Func <object> handler)
{
Guard.NotNull(bus, "bus");
Guard.NotNull(handler, "handler");
bus.Unsubscribe(topic, null, ObserverHandler.CreateA(handler));
}
