@Override
  public void propertyChange(PropertyChangeEvent evt) {
    if (evt.getPropertyName().equals(PROPERTY_NAME_VETO_POLICY)) {
      VetoPolicy oldValue = (VetoPolicy) evt.getOldValue();
      VetoPolicy newValue = (VetoPolicy) evt.getOldValue();
      if (oldValue != null)
        oldValue.removeVetoPolicyListener(this);
      if (newValue != null)
        newValue.addVetoPolicyListener(this);
      reflectData();
    }
  }
@Override
  public void propertyChange(PropertyChangeEvent evt)