private static boolean isStarSupported(String buildNumber) {
    if (buildNumber == null) return false;
    Matcher matcher = Holder.BASE_LINE_EXTRACTOR.matcher(buildNumber);
    if (matcher.matches()) {
      int branch = Integer.parseInt(matcher.group(1));
      return branch >= FIRST_BRANCH_SUPPORTING_STAR;
    }
    return false;
  }
private static boolean isStarSupported(String buildNumber)