sS replaceCurlyBracedWith(S s, S replacement) {
  ret join(replaceCurlyBracedWith(javaTokWithAllBrackets_cached(s), replacement));
}

static LS replaceCurlyBracedWith(LS tok, S replacement) {
  ret mapCodeTokens(t -> isCurlyBraced_simple(t) ? replacement : t, tok);
}