/// <summary>
 /// 在群组中发送普通消息:send_group_msg
 /// </summary>
 /// <param name="request"></param>
 /// <returns></returns>
 public async Task <SendGroupMsgResult> SendGroupMsgAsync(SendGroupMsgRequest request)
 {
     return(await RequestAsync <SendGroupMsgRequest, SendGroupMsgResult>(ServiceName, "send_group_msg", request));
 }
 public static SendGroupMsgResult SendGroupMsg(SendGroupMsgRequest request)
 {
     return(Request <SendGroupMsgResult>("group_open_http_svc", "send_group_msg", request));
 }