def do_change_default_stream_group_description(realm: Realm, group: DefaultStreamGroup, new_description: str) -> None:
    group.description = new_description
    group.save()
    notify_default_stream_groups(realm)
def do_change_default_stream_group_description(realm: Realm, group: DefaultStreamGroup, new_description: str) -> None:
    group.description = new_description
    group.save()
    notify_default_stream_groups(realm)