Missing Method in SitemapsController

Error: The action show_detail is not defined in controller SitemapsController

Error: Create SitemapsController::show_detail() in file: app\controllers\sitemaps_controller.php.

<?php
class SitemapsController extends AppController {

	var $name = 'Sitemaps';


	function show_detail() {

	}

}
?>

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