class AppointmentSlots { int totalSlots; int occupiedSlots; int emptySlots; AppointmentSlots({ required this.totalSlots, required this.occupiedSlots, required this.emptySlots, }); factory AppointmentSlots.fromJson(Map json) => AppointmentSlots( totalSlots: json["totalSlots"], occupiedSlots: json["occupiedSlots"], emptySlots: json["emptySlots"], ); Map toJson() => { "totalSlots": totalSlots, "occupiedSlots": occupiedSlots, "emptySlots": emptySlots, }; }