-If the link requires admin approval, this adds you to the requesting members list. Otherwise, this adds you to the pending members list.
+Behavior of this method depends on the `requirePermission` parameter of the `enableLink` method. If permission is required, `joinGroup` adds you to the requesting members list. Permission may be granted based on the group's `PermissionAddMember` property (`ONLY_ADMINS` or `EVERY_MEMBER`). If permission is not required, `joinGroup` admits you immediately to the group.