code: protected void diff_charsToLines(LinkedList<Diff> diffs,
              List<String> lineArray) {
          StringBuilder text;
          for (Diff diff : diffs) {
              text = new StringBuilder();
              for (int y = 0; y < diff.text.length(); y++) {
                  text.append(lineArray.get(diff.text.charAt(y)));
              }
              diff.text = text.toString();
          }
      }
docs: Rehydrate the text in a diff from a string of line hashes to real lines
  of text.
  
  @param diffs
  LinkedList of Diff objects.
  @param lineArray
  List of unique strings.