Missing Method in VistasController

Error: The action bismark is not defined in controller VistasController

Error: Create VistasController::bismark() in file: app/controllers/vistas_controller.php.

<?php
class VistasController extends AppController {

	var $name = 'Vistas';


	function bismark() {

	}

}
?>

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