How to create an Android interface for the vibrator in PlayN

AndroidVibrator.java

import android.os.Vibrator;

public class AndroidVibrator implements MyGame.Vibrator_interface {
  
  public Vibrator vib;
  
  @Override
  public void callvibrator(long miliduration){
    vib.vibrate(miliduration);
  }
}

MyGame.java

public class MyGame implements Game {
  public Vibrator_interface vib;
  
  public MyGame(Vibrator_interface _vibrator){
    vib = _vibrator;
  }
}

MyGameActivity.java

import your.package.name.MyGame;

public class MyGameActivity extends GameActivity {
    
    AndroidVibrator andVib = new AndroidVibrator();
    
    @Override
    public void main(){ 
      PlayN.run(new MyGame(andvib));
    }
  }

Vibrator_interface.java

public interface Vibrator_interface{
  void callvibrator(long miliduration);  
}