public void addPropertyChangeListener(String _propertyName, PropertyChangeListener _listener) { myPropertyChangeSupport.addPropertyChangeListener(_propertyName, _listener);
public void addPropertyChangeListener(PropertyChangeListener _listener) { myPropertyChangeSupport.addPropertyChangeListener(_listener);
  public void addPropertyChangeListener(String _propertyName, PropertyChangeListener _listener) {    myPropertyChangeSupport.addPropertyChangeListener(_propertyName, _listener);  }