anchor.diff:     * Gets the internal elements.
      */
     List<Element> get elements;
  -
  -  /**
  -   * Gets or sets data.
  -   */
  -  Object data(String name, [Object value]) {
  -    if (value != null) {
  -      _setData(name, value);
  -    }
  -
  -    return _getData(name);
  -  }
   
     /**
      * Gets arbitrary data from an element.
  
positive.code:   /**
     * Gets arbitrary data.
     */
    Object _getData(String name) {
      String str = null;
  
      if (elements.length > 0) {
  
negative.code: part of domnode;
  
  // TODO: remove redundant comments
  // TODO: organize methods (public first, private last)
  /**
   * This class allows operating with arbitrary data.
   */
  