docs: public int parseNaturalIntAscii(final int index, final int length)
      {
          boundsCheck0(index, length);
  
          final int end = index + length;
          int tally = 0;
          for (int i = index; i < end; i++)
          {
              tally = (tally * 10) + AsciiEncoding.getDigit(i, byteArray[i]);
          }
  
          return tally;
      }