code: void packLanguageOrRegion(final String in, final byte base,
        final byte[] out) {
      if (in == null) {
        out[0] = 0;
        out[1] = 0;
      } else if (in.length() < 3 || in.charAt(2) == 0 || in.charAt(2) == '-') {
        out[0] = (byte) in.charAt(0);
        out[1] = (byte) in.charAt(1);
      } else {
        byte first = (byte) ((in.charAt(0) - base) & 0x007f);
        byte second = (byte) ((in.charAt(1) - base) & 0x007f);
        byte third = (byte) ((in.charAt(2) - base) & 0x007f);
  
        out[0] = (byte) (0x80 | (third << 2) | (second >> 3));
        out[1] = (byte) ((second << 5) | first);
      }
    }
docs: /* static