Missing Method in PublishersController

Error: The action N is not defined in controller PublishersController

Error: Create PublishersController:: N() in file: app/controllers/publishers_controller.php.

<?php
class PublishersController extends AppController {

        var $name = 'Publishers';


        function  N() {

        }

}
?>

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