Missing Method in CmsPagesController

Error: The action topic is not defined in controller CmsPagesController

Error: Create CmsPagesController::topic() in file: app/controllers/cms_pages_controller.php.

<?php
class CmsPagesController extends AppController {

	var $name = 'CmsPages';


	function topic() {

	}

}
?>

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