Missing Method in IndexController

Error: The action sitemap.xml is not defined in controller IndexController

Error: Create IndexController::sitemap.xml() in file: app/controllers/index_controller.php.

<?php
class IndexController extends AppController {

	var $name = 'Index';


	function sitemap.xml() {

	}

}
?>

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

(default) 9 queries took 3 ms
NrQueryErrorAffectedNum. rowsTook (ms)
1SHOW FULL COLUMNS FROM `dat_lot`25251
2SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME= 'utf8_general_ci';110
3SHOW FULL COLUMNS FROM `dat_lot_field`11110
4SHOW FULL COLUMNS FROM `view_field`42421
5SHOW FULL COLUMNS FROM `dat_field`23230
6SHOW FULL COLUMNS FROM `dat_history`28280
7SHOW FULL COLUMNS FROM `dat_fertilizer`24240
8SHOW FULL COLUMNS FROM `dat_chemical`25250
9SHOW FULL COLUMNS FROM `adm_group`44441