when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String actorDid,
    3. DateTime convoCreatedAt,
    4. String convoId,
    5. DateTime createdAt,
    6. int groupMemberCount,
    7. String groupName,
    8. String joinLinkCode,
    9. String ownerDid,
    10. String rev,
    11. bool subjectFollowsOwner,
    12. 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,  DateTime convoCreatedAt,  String convoId,  DateTime createdAt,  int groupMemberCount,  String groupName,  String joinLinkCode,  String ownerDid,  String rev,  bool subjectFollowsOwner,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _EventGroupChatMemberJoined():
return $default(_that.$type,_that.actorDid,_that.convoCreatedAt,_that.convoId,_that.createdAt,_that.groupMemberCount,_that.groupName,_that.joinLinkCode,_that.ownerDid,_that.rev,_that.subjectFollowsOwner,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}