Missing Method in BooksController

Error: The action R is not defined in controller BooksController

Error: Create BooksController::R() in file: app/controllers/books_controller.php.

<?php
class BooksController extends AppController {

	var $name = 'Books';


	function R() {

	}

}
?>

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