static <A extends Component> L<A> inFrame(S titleFragment, L<A> l) {
  new L<A> l2;
  for (A a : l) {
    JFrame f = getFrame(a);
    continue if f == null;
    if (igrep(getFrameTitle(f), titleFragment))
      l2.add(a);
  }
  ret l2;
}