/// <summary>
        /// 用户帮砍
        /// </summary>
        /// <param name="request"></param>
        /// <returns></returns>
        public async Task <OperationResult <BargainResult> > HelpCutAsync(HelpCutRequest request)
        {
            if (request.IdKey == Guid.Empty || request.UserId == Guid.Empty || request.ActivityProductId < 0)
            {
                return(OperationResult.FromError <BargainResult>(ErrorCode.ParameterError, "参数不正确"));
            }

            var result = await BargainManager.HelpCutAsync(request);

            return(OperationResult.FromResult(result));
        }