public async Task <bool> Delete(string type, int id)
        {
            int numOfChanges         = 0;
            int numOfExpectedChanges = 1;//for our VehicleMake record

            //A bit of duplicate looking code, but we want to make sure the type matches
            // a case before we do any work, and we want to make sure work has been done
            // before we save any changes.
            switch (type)
            {
            case "make":
            {
                VehicleMake makeToDelete = await _vehicleMakeRepository.GetAsync(id);

                IEnumerable <VehicleModel> modelsToDelete = await _vehicleModelRepository.FindAsync(x => x.VehicleMakeId == id);

                if (makeToDelete != null)
                {
                    numOfExpectedChanges += modelsToDelete.Count();
                    _vehicleMakeRepository.Remove(makeToDelete);
                    _vehicleModelRepository.RemoveRange(modelsToDelete);
                    numOfChanges = await _vehicleMakeRepository.SaveChangesAsync();
                }
                break;
            }

            case "model":
            {
                VehicleModel delete = await _vehicleModelRepository.GetAsync(id);

                if (delete != null)
                {
                    numOfExpectedChanges = 1;
                    _vehicleModelRepository.Remove(delete);
                    numOfChanges = await _vehicleMakeRepository.SaveChangesAsync();
                }
                break;
            }
            }
            //if we delete what we expect to delete
            return(numOfChanges == numOfExpectedChanges);
        }