/// <summary>
/// 执行上下文被移除的事件
/// 注意：此事件不是实时触发的，而是等过期后任意一个人发过来的下一条消息执行之前触发。
/// </summary>
/// <param name="e"></param>
private void OnMessageContextRemoved(WeixinContextRemovedEventArgs <TRequest, TResponse> e)
{
this.MessageContextRemoved?.Invoke(this, e);
}
/// <summary>
/// 此上下文被清除的时候触发
/// </summary>
public virtual void OnRemoved()
{
WeixinContextRemovedEventArgs <TRequest, TResponse> e = new WeixinContextRemovedEventArgs <TRequest, TResponse>(this);
OnMessageContextRemoved(e);
}
