whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String $type, String actorDid, @JsonKey.new(toJson: iso8601) DateTime convoCreatedAt, String convoId, @JsonKey.new(toJson: iso8601) DateTime createdAt, int groupMemberCount, String groupName, String ownerDid, int requestMembersCount, String rev, String subjectDid, bool subjectFollowsOwner, 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,  String actorDid, @JsonKey(toJson: iso8601)  DateTime convoCreatedAt,  String convoId, @JsonKey(toJson: iso8601)  DateTime createdAt,  int groupMemberCount,  String groupName,  String ownerDid,  int requestMembersCount,  String rev,  String subjectDid,  bool subjectFollowsOwner,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _EventGroupChatMemberAdded() when $default != null:
return $default(_that.$type,_that.actorDid,_that.convoCreatedAt,_that.convoId,_that.createdAt,_that.groupMemberCount,_that.groupName,_that.ownerDid,_that.requestMembersCount,_that.rev,_that.subjectDid,_that.subjectFollowsOwner,_that.$unknown);case _:
  return null;

}
}