updateButtons();
  protected void destinationChanged(EOEntity _oldDestination, EOEntity _newDestination) {    if (_oldDestination != null) {      _oldDestination.removePropertyChangeListener(EOEntity.ATTRIBUTE, myAttributesListener);      _oldDestination.removePropertyChangeListener(EOEntity.ATTRIBUTES, myAttributesListener);    }    updateJoins();    if (_newDestination != null) {      _newDestination.addPropertyChangeListener(EOEntity.ATTRIBUTE, myAttributesListener);      _newDestination.addPropertyChangeListener(EOEntity.ATTRIBUTES, myAttributesListener);    }  }