code: public int countDifferencesBetweenIgnoreWhitespaceAnd(String first, String second) {
          String cleanFirst = allWhitespaceToSingleSpace(first);
          String cleanSecond = allWhitespaceToSingleSpace(second);
          return countDifferencesBetweenAnd(cleanFirst, cleanSecond);
      }
docs: Determines number of differences (substrings that are not equal) between two strings,
  ignoring differences in whitespace.
  @param first first string to compare.
  @param second second string to compare.
  @return number of different substrings.