/**
* Add the given layer motion listener to this interactor. The listener will be invoked when the
* mouse moves into, around on, or out of a suitable target object.
*/
public void addLayerMotionListener(LayerMotionListener l) {
_layerMotionListener = LayerEventMulticaster.add(_layerMotionListener, l);
}
/** Remove the given layer motion listener from this interactor. */
public void removeLayerMotionListener(LayerMotionListener l) {
_layerMotionListener = LayerEventMulticaster.remove(_layerMotionListener, l);
}