public async Task <IActionResult> Delete(int id)
        {
            var model = await _subscriptionProductSnapshotRepository.GetSingleAsync(id);

            if (model == null)
            {
                return(NotFound());
            }
            _subscriptionProductSnapshotRepository.Delete(model);
            if (!await UnitOfWork.SaveAsync())
            {
                return(StatusCode(500, "删除时出错"));
            }
            return(NoContent());
        }