public static String normalize()

in locales-utils/src/main/java/com/spotify/i18n/locales/utils/acceptlanguage/AcceptLanguageUtils.java [62:66]


  public static String normalize(final String acceptLanguageValue) {
    return parse(acceptLanguageValue).stream()
        .map(LanguageRange::toString)
        .collect(Collectors.joining(","));
  }