static <A> A lookupIgnoreCase(Map<S, A> map, S key) {
  for (S s : map.keySet())
    if (eqic(s, key))
      ret map.get(s);
  null;
}

static <A> L<A> lookupIgnoreCase(MultiMap<S, A> map, S key) {
  for (S s : map.keySet())
    if (eqic(s, key))
      ret map.get(s);
  ret litlist();
}