please include function ai_languages.

static AutoCloseable ai_setLanguages(S... languages) {
  ret ai_setLanguages(asCISet(languages));
}

static AutoCloseable ai_setLanguages(Collection<S> languages) {
  Set<S> oldValue = ai_languages_value!;
  ai_languages_value.set(asCISet(languages));
  ret autoCloseable { ai_languages_value.set(oldValue); };
}