/// <summary>
    /// Call to topup a card.
    /// </summary>
    /// <param name="topUp">The TopUp object which specifies the card to topup.</param>
    /// <returns>Returns a boolean indicating whether call has finished successfully.          </returns>
    [OperationContract]
    bool UploadTopUp(TopUp topUp);

但是,我在上面的3个正斜杠中添加的XML注释///不会出现在我的客户端应用程序中的工具提示中,这是标准的WCF / Web服务功能吗？他们会不会出现？或者有没有办法让它们出现？