code: @Override
    public void classLoaderDestroy(DynamicClassLoader loader)
    {
      removeLoader(loader);
  
      _localHandlers.remove(loader);
  
      HandlerEntry ownHandlers = _ownHandlers.getLevel(loader);
      if (ownHandlers != null)
        _ownHandlers.remove(loader);
  
      if (ownHandlers != null)
        ownHandlers.destroy();
  
      if (_localLevel != null)
        _localLevel.remove(loader);
  
      updateEffectiveLevel(_systemClassLoader);
    }
docs: Classloader destroy callback