public override async Task <ResponseBase> Update(User request, ServerCallContext context)
        {
            var result = new ResponseBase();

            try
            {
                await _coreService.Update(new Core.Entities.User
                {
                    Code       = request.Code,
                    DisplayKey = request.DisplayKey,
                    OrderNo    = request.OrderNo
                });

                result.Code = ResponseCode.Success;
            }
            catch (Exception)
            {
                result.Code = ResponseCode.GeneralError;
            }

            return(result);
        }