class GeoPackageLayerActivationHandler extends AbstractActivationListener {

    public void close()
    {
        myEventManager.unsubscribe(DataTypeVisibilityChangeEvent.class, myVisibilityListener);
        myEventManager.unsubscribe(DataTypeInfoColorChangeEvent.class, myColorListener);
        myEventManager.unsubscribe(DataTypeRemovedEvent.class, myRemovedListener);
    }

    public  GeoPackageLayerActivationHandler(EventManager eventManager, LayerActivationListener tileLayerListener,
            LayerActivationListener featureLayerListener);

}