CountdownMilestone<T> constructor Null safety

CountdownMilestone<T>(
  1. {required Countdown parent,
  2. required T event,
  3. required Duration fromEnd}
)

Implementation

CountdownMilestone({
  required this.parent,
  required T event,
  required this.fromEnd,
}) : super(event: event, completion: parent.completion.add(fromEnd));