toJson method Null safety

Map<String, dynamic> toJson()

Implementation

core.Map<core.String, core.dynamic> toJson() => {
      if (clickDuration != null) 'clickDuration': clickDuration!,
      if (postImpressionActivitiesDuration != null)
        'postImpressionActivitiesDuration': postImpressionActivitiesDuration!,
    };