Group constructor
//////////// ////////////
Implementation
// II.B - Constructor
///////////////
Group({
this.id,
required this.name,
required this.createdBy,
List<String>? members,
this.isPublic = false,
this.publicLinkCode,
Timestamp? createdAt,
this.locationSharingEnabled = true,
}) :
members = members ?? [],
createdAt = createdAt ?? Timestamp.now();