code: @Override
      public void renderHead(final Component _component,
                             final IHeaderResponse _response)
      {
          super.renderHead(_component, _response);
          final StringBuilder js = new StringBuilder()
              .append("require([");
          for (int i = 0; i < this.packages.length; i++) {
              if (i > 0) {
                  js.append(",");
              }
              js.append("\"").append(this.packages[i]).append("\"");
          }
          js.append("]);");
          _response.render(JavaScriptHeaderItem.forScript(js, _component.getId()));
      }
docs: Render the links for the head.
  
  @param _component component the header will be rendered for
  @param _response resonse to add