anchor.diff:      }
     }
     
  -  _applySelection(item, isSelected) {
  +  _applySelection(HtmlElement item, isSelected) {
       if (this.selectedClass != null) {
         item.classes.toggle(this.selectedClass, isSelected);
       }
  
positive.code:    *       <p>color = {{color}}</p>
     *     </form>
     * 
    */
    @published
    String itemsSelector = '';
    /**
     * The event that would be fired from the item element to indicate
     * it is being selected.
    */
    @published
    String activateEvent= 'click';
    
  
negative.code:     return value;
    }
    
    _valueForNode(HtmlElement node) {
      var mirror = reflect(node);
      //TODO This is gross.  The alternative is to search the type heirarchy
      //for a matching variable or getter.
  