static <A> S levenWithSwapsClosestIC(Map<S, A> map, S s) {
  ret levenWithSwapsClosestIC(keys(map), s);
}

sS levenWithSwapsClosestIC(Collection<S> l, S s) {
  int limit = Integer.MAX_VALUE-1;
  new Lowest<S> best;
  for (S key : unnull(l)) {
    limit = levenWithSwaps_limitedIC(s, key, limit);
    best.put(key, limit);
  }
  ret best!;
}

static <A> S levenWithSwapsClosestIC(S s, Map<S, A> map) {
  ret levenWithSwapsClosestIC(map, s);
}

sS levenWithSwapsClosestIC(S s, Collection<S> l) {
  ret levenWithSwapsClosestIC(l, s);
}

Began life as a copy of #1008052