public void AddVehicle(string claimNumber,VehicleInfoType veh)
        {
            var claim = _context.MitchellClaim.Include(c => c.Vehicles).Where(c => c.ClaimNumber == claimNumber).FirstOrDefault();
            if( claim.Vehicles.Count > 0)
            {
                claim.Vehicles.Add(veh);
            }
            else
            {
                var list = new List<VehicleInfoType>();
                list.Add(veh);
                claim.Vehicles = list;
            }

            _context.VehicleInfo.Add(veh);
            _context.SaveChanges();

        }
        public bool UpdateVehicle(string claimNumber, VehicleInfoType newVehicle)
        {
            bool isChanged = false;
            try
            {
                var claimToUpdate = _context.MitchellClaim.Include( c => c.Vehicles).Where(c => c.ClaimNumber == claimNumber).SingleOrDefault();

                if (claimToUpdate != null)
                {
                    var vehicleToUpdate = claimToUpdate.Vehicles.Where(v => v.Vin == newVehicle.Vin).SingleOrDefault();
                    if (vehicleToUpdate != null)
                    {
                        if (newVehicle.ExteriorColor != null && newVehicle.ExteriorColor != "" && newVehicle.ExteriorColor != vehicleToUpdate.ExteriorColor)
                        {
                            vehicleToUpdate.ExteriorColor = newVehicle.ExteriorColor;
                            isChanged = true;
                        }

                        if (newVehicle.LicPlateExpDate != null && newVehicle.LicPlateExpDate != vehicleToUpdate.LicPlateExpDate)
                        {
                            vehicleToUpdate.LicPlateExpDate = newVehicle.LicPlateExpDate;
                            isChanged = true;
                        }

                        //TODO more fields to update
                    }
                }
            }
            catch (Exception ex)
            {
                _logger.LogError("vehicle update error", ex);
                return false;
            }
            return isChanged;
        }