Missing Method in PagesController

Error: The action sitemap.xml is not defined in controller PagesController

Error: Create PagesController::sitemap.xml() in file: app/controllers/pages_controller.php.

<?php
class PagesController extends AppController {

	var $name = 'Pages';


	function sitemap.xml() {

	}

}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_action.ctp