@Mapper
public interface TestMapper {
    TestMapper INSTANCE = Mappers.getMapper( TestMapper.class );

    @SubclassMapping(source = CarDto.class, target = Car.class)
    @SubclassMapping(source = BikeDto.class, target = Bike.class)
    @Mapping(source = "maker", target = "vehicleManufacturingCompany")
    Vehicle map(VehicleDto vehicle);

    @InheritConfiguration
    Vehicle mapAnother(VehicleDto vehicleDto);
}

public class TestMapperImpl implements TestMapper {

    @Override
    public Vehicle map(VehicleDto vehicle) {
        if ( vehicle == null ) {
            return null;
        }

        if (vehicle instanceof CarDto ) {
            return  carDtoToCar( (CarDto) vehicle );
        }
        else if (vehicle instanceof BikeDto ) {
            return  bikeDtoToBike( (BikeDto) vehicle );
        }
        else {
            Vehicle vehicle1 = new Vehicle();

            vehicle1.setVehicleManufacturingCompany( vehicle.getMaker() );
            vehicle1.setName( vehicle.getName() );

            return vehicle1;
        }
    }

    @Override
    public Vehicle mapAnother(VehicleDto vehicleDto) {
        if ( vehicleDto == null ) {
            return null;
        }

        Vehicle vehicle = new Vehicle();

        vehicle.setVehicleManufacturingCompany( vehicleDto.getMaker() );
        vehicle.setName( vehicleDto.getName() );

        return vehicle;
    }

    protected Car carDtoToCar(CarDto carDto) {
        if ( carDto == null ) {
            return null;
        }

        Car car = new Car();

        car.setVehicleManufacturingCompany( carDto.getMaker() );
        car.setName( carDto.getName() );
        car.setManual( carDto.isManual() );

        return car;
    }

    protected Bike bikeDtoToBike(BikeDto bikeDto) {
        if ( bikeDto == null ) {
            return null;
        }

        Bike bike = new Bike();

        bike.setVehicleManufacturingCompany( bikeDto.getMaker() );
        bike.setName( bikeDto.getName() );
        bike.setNumberOfGears( bikeDto.getNumberOfGears() );

        return bike;
    }
}