code: protected RenderBuilder render(String template, Map values) {
          RenderTemplateResponse resp = new RenderTemplateResponse(values, template, RequestContext.getFormat());
          RequestContext.setControllerResponse(resp);
          return new RenderBuilder(resp);
      }
docs: Renders results with a template.
  
  This call must be the last call in the action.
  
  @param template - template name, must be "absolute", starting with slash,
  such as: "/controller_dir/action_template".
  @param values map with values to pass to view.
  @return instance of {@link RenderBuilder}, which is used to provide additional parameters.