Missing Method in UsersController

Error: The action polyfills.webvtt is not defined in controller UsersController

Error: Create UsersController::polyfills.webvtt() in file: prodlite2.git/controllers/users_controller.php.

<?php
class UsersController extends AppController {

	var $name = 'Users';


	function polyfills.webvtt() {

	}

}
?>

Notice: If you want to customize this error message, create prodlite2.git/views/errors/missing_action.ctp.