AtGroup constructor
AtGroup(})
Implementation
AtGroup(this.groupName,
{this.groupId,
this.displayName,
this.description,
this.groupPicture,
this.members,
this.tags,
this.createdOn,
this.updatedOn,
this.createdBy,
this.updatedBy}) {
members ??= <AtContact>{};
createdOn ??= DateTime.now();
updatedOn ??= DateTime.now();
}