Missing Method in PlanController

Error: The action service is not defined in controller PlanController

Error: Create PlanController::service() in file: app/controllers/plan_controller.php.

<?php
class PlanController extends AppController {

	var $name = 'Plan';


	function service() {

	}

}
?>

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