private void notifyClassObservers(ClassDescriptor classDescriptor){
  for (  IClassObserver observer : classObserverList) {
    observer.observeClass(classDescriptor);
  }
}

private void notifyClassObservers ( ClassDescriptor classDescriptor ) { for ( IClassObserver observer : classObserverList ) { observer . observeClass ( classDescriptor ) ; } }
notify all iclassobservers that we are visiting given class .
