togglePresence method
Toggles MyUser.presence between Presence.present and Presence.away.
Implementation
Future<void> togglePresence() async {
final Presence presence = switch (myUser.value?.presence) {
Presence.present => Presence.away,
Presence.away => Presence.present,
(_) => Presence.present,
};
await _myUserService.updateUserPresence(presence);
}