AlarmPresentationState.Mode.Countdown An object that specifies a countdown is in progress. Declarationstruct Countdown TopicsCreating a countdowninit(totalCountdownDuration:previouslyElapsedDuration:startDate:fireDate:)fireDatepreviouslyElapsedDurationstartDatetotalCountdownDuration RelationshipsConforms ToDecodableEncodableEquatableHashableSendableSendableMetatype See AlsoCreating a countdownAlarmPresentationState.Mode.countdown(_:)