if ($info['method'] === 'direct') {
        // this is the direct rendering approach.
        $this->renderedBlocks[$name] = $instance->render();
      }
      elseif ($info['method'] === 'subrequest') {
        // this routes rendering through a subrequest.
        $response = $this->container->get('http_kernel')->forward(array($instance, 'render'), $attributes, $request->query->all());
        $this->renderedBlocks[$name] = $response->getContent();
      }