docs: public static String getDiff(String old, String newData, String identify, String htmlClick) {
  
          StringComparator stringComparator = new StringComparator(old, newData);
          String contentString = StringEscapeUtils.escapeHtml4(identify) + "<br/><br/>" + htmlClick + "<br/> ";
  
          try {
  
              if (stringComparator.getChangesFromOriginal().size() == 0 &&
                      stringComparator.getDeletesFromOriginal().size() == 0 &&
                      stringComparator.getInsertsFromOriginal().size() == 0) {
  
                  return "<span style='color:#FF0000'>OK, NO MODIFICATOIN!</span>";
  
              } else {
  
                  String oldValue = "<br/><br/><br/><span style='color:#FF0000'>Old value:</span><br/>" +
                          StringEscapeUtils.escapeHtml4(old).replaceAll("\n", "<br/>");
  
                  String newValue = "<br/><br/><br/><span style='color:#FF0000'>New value:</span><br/>" +
                          StringEscapeUtils.escapeHtml4(newData).replaceAll("\n", "<br/>");
  
                  String diff = "";
                  if (stringComparator.getChangesFromOriginal().size() != 0) {
                      diff = "<span style='color:#FF0000'>Change info: </span><br/>";
                      for (Chunk chunk : stringComparator.getChangesFromOriginal()) {
                          diff += StringEscapeUtils.escapeHtml4(chunk.toString()) + "<br/>";
                      }
                  }
  
                  if (stringComparator.getInsertsFromOriginal().size() != 0) {
                      diff += "<br/><span style='color:#FF0000'>Insert info: </span><br/>";
                      for (Chunk chunk : stringComparator.getInsertsFromOriginal()) {
                          diff += StringEscapeUtils.escapeHtml4(chunk.toString()) + "<br/>";
                      }
                  }
  
                  if (stringComparator.getDeletesFromOriginal().size() != 0) {
                      diff += "<br/><span style='color:#FF0000'>Delete info: </span><br/>";
                      for (Chunk chunk : stringComparator.getDeletesFromOriginal()) {
                          diff += StringEscapeUtils.escapeHtml4(chunk.toString()) + "<br/>";
                      }
                  }
  
                  return contentString + diff + oldValue + newValue;
              }
  
          } catch (IOException e) {
              LOG.error("compare error", e);
  
              return "comparator error" + e.toString();
          }
      }