Cats.Services.EarlyWarning.ReliefRequisitionService.GetZonesFoodRequested C# (CSharp) Метод

        public List<int?> GetZonesFoodRequested(int requestId)
        {
            var regionalRequestDetails =
                _unitOfWork.RegionalRequestDetailRepository.Get(t => t.RegionalRequestID == requestId && t.Beneficiaries > 0, null,
                                                                "FDP,FDP.AdminUnit");
            var zones =
                (from requestDetail in regionalRequestDetails
                 where requestDetail.Fdp.AdminUnit.ParentID != null
                 select requestDetail.Fdp.AdminUnit.ParentID).Distinct();
            return zones.ToList();
        }