private static void findInstallations(Set<String> candidates, String exe_name, String... roots) {
    for (String root : roots) {
      findSubdirInstallations(candidates, root, FileUtilRt.getNameWithoutExtension(exe_name), exe_name);
    }
  }
private static void findInstallations(Set<String> candidates, String exe_name, String... roots)