when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String actorDid,
    3. @JsonKey.new(toJson: iso8601) DateTime convoCreatedAt,
    4. String convoId,
    5. @JsonKey.new(toJson: iso8601) DateTime createdAt,
    6. int groupMemberCount,
    7. String groupName,
    8. String ownerDid,
    9. int requestMembersCount,
    10. String rev,
    11. String subjectDid,
    12. bool subjectFollowsOwner,
    13. Map<String, dynamic>? $unknown,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<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():
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 _:
  throw StateError('Unexpected subclass');

}
}