public async Task <IActionResult> AddBatchItem([FromBody] BatchItem batchItem)
        {
            _batchService.AddBatchItem(batchItem);
            var result = await _unitOfWork.SaveAsync();

            if (result > 0)
            {
                return(Ok(result));
            }

            return(StatusCode(500, "Unable to add new batch item."));
        }