public async Task <IActionResult> GetOperationsByMach(int userId, string jobNum, string mach)
        {
            if (userId != int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value))
            {
                return(Unauthorized());
            }

            IEnumerable <Operation> directOperations = await _repo.GetOpsByMach(userId, jobNum, mach);

            var ops = _mapper.Map <IEnumerable <OperationForReturnDto> >(directOperations);

            return(Ok(ops));
        }