code: @Override
      public void renderHead(final Component _component,
                             final IHeaderResponse _response)
      {
          super.renderHead(_component, _response);
          _response.render(RequireHeaderItem.forClasses(
                          isJsExecuteable() ? DojoClasses.ContentPaneX : DojoClasses.ContentPane,
                                          DojoClasses.LayoutContainer, DojoClasses.parser));
      }
docs: Render the links for the head.
  
  @param _component component the header will be rendered for
  @param _response resonse to add