@SuppressWarnings("UnusedDeclaration")
    public void callback(ID self, Pointer selector, ID event) {
      Logger.getInstance(MacScrollBarUI.class).debug("update ", this);
      EdtInvocationManager.invokeLaterIfNeeded(this);
    }
@SuppressWarnings("UnusedDeclaration")
    public void callback(ID self, Pointer selector, ID event)