protected function render($template, $args = array())
    {
        if (!is_null($this->renderTemplateSuffix)
            && !preg_match('/\.' . $this->renderTemplateSuffix . '$/', $template)
        ) {
            $template .= '.' . $this->renderTemplateSuffix;
        }
        $this->app->render($template, $args);
    }