code: function () {
          var self = this;
  
          // Render any new items
          self.items().each(function (ctrl, index) {
            var containerElm;
  
            ctrl.parent(self);
  
            if (!ctrl.state.get('rendered')) {
              containerElm = self.getEl('body');
  
              // Insert or append the item
              if (containerElm.hasChildNodes() && index <= containerElm.childNodes.length - 1) {
                $(containerElm.childNodes[index]).before(ctrl.renderHtml());
              } else {
                $(containerElm).append(ctrl.renderHtml());
              }
  
              ctrl.postRender();
              ReflowQueue.add(ctrl);
            }
          });
  
          self._layout.applyClasses(self.items().filter(':visible'));
          self._lastRect = null;
  
          return self;
        }
docs: Renders new control instances.
  
  @private