Missing Method in ToukiboController

Error: The action nagare is not defined in controller ToukiboController

Error: Create ToukiboController::nagare() in file: app/controllers/toukibo_controller.php.

<?php
class ToukiboController extends AppController {

	var $name = 'Toukibo';


	function nagare() {

	}

}
?>

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