- * @return array Array(
- * 'add' => array( addablegroups ),
- * 'remove' => array( removablegroups ),
- * 'add-self' => array( addablegroups to self ),
- * 'remove-self' => array( removable groups from self )
- * )
+ * @return array [
+ * 'add' => [ addablegroups ],
+ * 'remove' => [ removablegroups ],
+ * 'add-self' => [ addablegroups to self ],
+ * 'remove-self' => [ removable groups from self ]
+ * ]