sS replaceCurlyBracedWithStars(S s) {
  ret join(replaceCurlyBracedWithStars(javaTokWithAllBrackets_cached(s)));
}

static LS replaceCurlyBracedWithStars(LS tok) {
  ret mapCodeTokens(t -> isCurlyBraced_simple(t) ? "*" : t, tok);
}