/**
* Sets the service that this service is decorating.
*
- * @param null|string $id The decorated service id, use null to remove decoration
- * @param null|string $renamedId The new decorated service id
+ * @param string|null $id The decorated service id, use null to remove decoration
+ * @param string|null $renamedId The new decorated service id
* @param int $priority The priority of decoration
*
* @return $this