Missing Method in CartsController

Error: The action carts is not defined in controller CartsController

Error: Create CartsController::carts() in file: app/controllers/carts_controller.php.

<?php
class CartsController extends AppController {

	var $name = 'Carts';


	function carts() {

	}

}
?>

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