Extending classes question

1

i have a class A. it uses this code:

public function SideModule() {
           if (stage) {
    init();// stage accessible, call init function
   } else {
    addEventListener(Event.ADDED_TO_STAGE, init);// call init when stage accessible
   }
  }
   
  private function init(e:Event = null):void {
   if (e) {// called via event, remove it
    removeEventListener(Event.ADDED_TO_STAGE, init);
   }
   
   addEventListener(Event.REMOVED_FROM_STAGE, removedFromStageHandler);

if i extends thsi class with class B (class B extends class A) how will i get this events in class B?
do i have to register for them in class B as well?