title: Trying to use Xml Utility class
body: <p>I'm trying to use the Xml utility class to load some rss feeds into a page, and for some reason I can't seem to load it.</p>
  
  <p>I've been reading the docs and scratching my head for ages, perhaps it's late in the day, but can someone please help? I can see that <code>App</code> should be loaded, but I'm not sure if I need to use <code>App::uses()</code> or <code>App::import()</code></p>
  
  <p>Any pointer would be great. I'm trying to load it in my <code>app_controller</code> for the meantime. Then I might try and write a datasource for it instead, but I'll still need the Xml utility.</p>