static <A, B> L<A> withoutInstancesOf(Iterable<A> i, Class<B> c) {
  new L<A> l;
  if (i == null) ret l;
  c = primitiveToBoxedTypeOpt(c);
  for (A o : i)
    if (!isInstance(c, o))
      l.add(o);
  ret l;
}

static <A, B> L<A> nuLike withoutInstancesOf(Class<B> c, Iterable<A> i) {
  ret withoutInstancesOf(i, c);
}

Began life as a copy of #1004443