- * @param $user User object
- * @param array $add of groups to add
- * @param array $remove of groups to remove
- * @param string $reason reason for group change
- * @return Array: Tuple of added, then removed groups
+ * @param User $user
+ * @param array $add Array of groups to add
+ * @param array $remove Array of groups to remove
+ * @param string $reason Reason for group change
+ * @return array Tuple of added, then removed groups