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

static <A> A nlLookup(Map<S, A> map, S s, Matches m) {
  ret lookupByNLMatch(map, s, m);
}

static <A> L<A> nlLookup(MultiMap<S, A> map, S s) {
  ret lookupByNLMatch(map, s);
}