code: public void zoomNext() {
  		if (hasNext()) {
  			MapViewChangedEvent data = next.remove();
  			previous.addFirst(data);
  			active = false;
  			mapView.applyBounds(data.getBounds(), MapView.ZoomOption.LEVEL_CLOSEST);
  			updateActionsAbility();
  		}
  	}
docs: Zoom to the next level.