return super.getAccessibleRelationSet();
AccessibleRelationSet relations = super.getAccessibleRelationSet(); ButtonModel model = getModel(); if (model instanceof DefaultButtonModel) { ButtonGroup group = ((DefaultButtonModel) model).getGroup(); if (group != null) { Object[] target = new Object[group.getButtonCount()]; Enumeration els = group.getElements();  for (int index = 0; els.hasMoreElements(); ++index) { target[index] = els.nextElement(); }  AccessibleRelation rel = new AccessibleRelation(AccessibleRelation.MEMBER_OF); rel.setTarget(target); relations.add(rel); } } return relations;
    public AccessibleRelationSet getAccessibleRelationSet()      throws NotImplementedException    {      // TODO: What should be modified here?      return super.getAccessibleRelationSet();    }