docs: private void validateQuietZone(BitArray row, int startPattern) throws NotFoundException {
  
      int quietCount = this.narrowLineWidth * 10;  // expect to find this many pixels of quiet zone
  
      // if there are not so many pixel at all let's try as many as possible
      quietCount = quietCount < startPattern ? quietCount : startPattern;
  
      for (int i = startPattern - 1; quietCount > 0 && i >= 0; i--) {
        if (row.get(i)) {
          break;
        }
        quietCount--;
      }
      if (quietCount != 0) {
        // Unable to find the necessary number of quiet zone pixels.
        throw NotFoundException.getNotFoundInstance();
      }
    }