code: public HasText addDivider(String text) {
          JQMListDivider d = new JQMListDivider(text);
          appendDivider(d);
          return d;
      }
docs: Add a new divider with the given text and an automatically assigned id.
  
  @return the created divider which can be used to change the text dynamically. Changes to that
  instance write back to this list.