whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String $type, int id, int eventId, @ReportViewStatusConverter() ReportViewStatus status, @SubjectViewConverter() SubjectView subject, @ReasonTypeConverter() ReasonType reportType, String reportedBy, @SubjectViewConverter() SubjectView reporter, String? comment, DateTime createdAt, DateTime? updatedAt, DateTime? queuedAt, List<int>? actionEventIds, @ModEventViewConverter() List<ModEventView>? actions, String? actionNote, @SubjectStatusViewConverter() SubjectStatusView? subjectStatus, int? relatedReportCount, @ReportAssignmentConverter() ReportAssignment? assignment, @QueueViewConverter() QueueView? queue, bool? isMuted, Map<String, dynamic>? $unknown,)?)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String $type,  int id,  int eventId, @ReportViewStatusConverter()  ReportViewStatus status, @SubjectViewConverter()  SubjectView subject, @ReasonTypeConverter()  ReasonType reportType,  String reportedBy, @SubjectViewConverter()  SubjectView reporter,  String? comment,  DateTime createdAt,  DateTime? updatedAt,  DateTime? queuedAt,  List<int>? actionEventIds, @ModEventViewConverter()  List<ModEventView>? actions,  String? actionNote, @SubjectStatusViewConverter()  SubjectStatusView? subjectStatus,  int? relatedReportCount, @ReportAssignmentConverter()  ReportAssignment? assignment, @QueueViewConverter()  QueueView? queue,  bool? isMuted,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _ReportView() when $default != null:
return $default(_that.$type,_that.id,_that.eventId,_that.status,_that.subject,_that.reportType,_that.reportedBy,_that.reporter,_that.comment,_that.createdAt,_that.updatedAt,_that.queuedAt,_that.actionEventIds,_that.actions,_that.actionNote,_that.subjectStatus,_that.relatedReportCount,_that.assignment,_that.queue,_that.isMuted,_that.$unknown);case _:
  return null;

}
}