public override void OnNewItem(int id, Java.Lang.Object item)
 {
     mEyesGraphic.SetId(id);
     mEyesGraphic = new GooglyEyesGraphic(mOverlay);
 }
 public GooglyFaceTracker(GraphicOverlay overlay, CameraSource cameraSource = null)
 {
     mOverlay      = overlay;
     mEyesGraphic  = new GooglyEyesGraphic(mOverlay);
     mCameraSource = cameraSource;
 }