creatorUserIds property
Returns the creator's user ID of the room by fetching the sender of the
m.room.create event.
Implementation
Set<String> get creatorUserIds {
final creationEvent = getState(EventTypes.RoomCreate);
if (creationEvent == null) return {};
final additionalCreators =
creationEvent.content.tryGetList<String>('additional_creators') ?? [];
return {creationEvent.senderId, ...additionalCreators};
}