code: public static long extractTimestampMiniAscii(String idMiniAscii) throws NumberFormatException {
          return extractTimestampMini(Long.parseLong(idMiniAscii, Character.MAX_RADIX));
      }
docs: Extracts the (UNIX) timestamp from a mini ASCII id (radix
  {@link Character#MAX_RADIX}).
  
  @param idMiniAscii
  @return the UNIX timestamp (milliseconds)
  @throws NumberFormatException