docs: public static double getNormalizedEditDistance(
        String source, String target, boolean caseSensitive) {
  
      if (isEmptyOrWhitespace(source) && isEmptyOrWhitespace(target)) {
        return 0.0;
      }
  
      return (double) getEditDistance(source, target, caseSensitive)
          / (double) getWorstCaseEditDistance(source.length(), target.length());
    }