* @param suffix
   * @return String
   */
  public static String makeTemporaryFileName(String prefix, String suffix) {
    if (prefix == null) {
      prefix = "tmpfile";
    }
    if (suffix == null) {
      suffix = "";
    }
    { int i = Stella.NULL_INTEGER;
      int iter000 = 0;
      int upperBound000 = 100;

      for (;iter000 <= upperBound000; iter000 = iter000 + 1) {
        i = iter000;
        i = i;
        { String uniquifier = Stella.formatWithPadding(Native.integerToString(((long)(Stella.random(1000000)))), 6, '0', Stella.KWD_RIGHT, false);
          String tempfilename = prefix + uniquifier + suffix;

          if (!Stella.probeFileP(tempfilename)) {
            return (tempfilename);
          }
        }
      }
    }
    return (null);
  }