YYHome/packages/cpt_facility/lib/modules/booking/facility_booking_state.dart

class FacilityBookingState {
  //当前选中的时间日期
  DateTime selectedDate;

  FacilityBookingState({
    required this.selectedDate,
  });

  FacilityBookingState copyWith({
    DateTime? selectedDate,
  }) {
    return FacilityBookingState(
      selectedDate: selectedDate ?? this.selectedDate,
    );
  }
}