TimeSlotsWidget constructor Null safety

TimeSlotsWidget(
  1. {Key? key,
  2. int months = 3,
  3. int columns = 2,
  4. Future<List<TimeSlot>?> forDate(
    1. DateTime date
    )?,
  5. double? width,
  6. double? height,
  7. EdgeInsets padding = Dimens.padding_small,
  8. EdgeInsets margin = Dimens.margin_zero,
  9. DataCallback? onChange}
)