Missing Method in WordController

Error: The action robots.txt is not defined in controller WordController

Error: Create WordController::robots.txt() in file: app/controllers/word_controller.php.

<?php
class WordController extends AppController {

	var $name = 'Word';


	function robots.txt() {

	}

}
?>

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