@Override
  public void dispose() {
    if (myOriginal != null) {
      myOriginal.myChildren.remove(this);
    }
    myMinimizedButtonsPlaceholder.clear();
    myCommonActionsPlaceholder.clear();
    myContextActions.clear();

    myOriginal = null;
    myTopLeftActions = null;
    myTopRightActions = null;
    myAdditionalFocusActions = null;
    myLeftToolbarActions = null;
  }
@Override
  public void dispose()