createGroup abstract method
Creating groups
Groups have a public or private “open” visibility. Anyone can join public groups, but they must request to join and be accepted by a superadmin/admin of a private group.
Implementation
Future<model.Group> createGroup({
required model.Session session,
required String name,
String? avatarUrl,
String? description,
String? langTag,
int? maxCount,
bool? open,
});