Setting authorization levels using Rest Server extension for CodeIgniter

I'm using the Rest Server (https://github.com/philsturgeon/codeigniter-restserver) extension for Code开发者_如何学GoIgniter and I'm struggling to find examples on how to set the authorization level within a method.

I've tried all of the following:

public function index_get()
{
    $this->methods['index']['level'] = 10;
    $this->methods['level'] = 10;
    $this->rest->level = 10;
    $this->level = 10;
}

With no luck. Examples appreciated. Thanks!

The following protected method needs to go at the top of the API controller. Here you can specify the authorization level for each method and the rate limit.

   protected $methods = array(
           'index_get' => array('level' => 10),
           'types_get' => array('level' => 10, 'limit' => 20),
   );