class StaticTalkgroup { final String? talkgroup; final String? repeaterId; final String? slot; final int? timeout; StaticTalkgroup({ this.talkgroup, this.repeaterId, this.slot, this.timeout, }); factory StaticTalkgroup.fromJson(Map json) { return StaticTalkgroup( talkgroup: json['talkgroup']?.toString(), repeaterId: json['repeaterId']?.toString(), slot: json['slot']?.toString(), timeout: json['timeout'] as int?, ); } Map toJson() { return { 'talkgroup': talkgroup, 'repeaterId': repeaterId, 'slot': slot, 'timeout': timeout, }; } String get displaySlot { return slot != null ? 'TS$slot' : 'TS?'; } String get displayId { return talkgroup ?? 'Unknown'; } }