maybeWhen<TResult extends Object?>  method 
- @optionalTypeArgs
A variant of when that fallback to an orElse callback.
It is equivalent to doing:
switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}
Implementation
@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function(@AtUriConverter()  AtUri uri,  String? cid,  String? cursor, @LikeConverter()  List<Like> likes,  Map<String, dynamic>? $unknown)?  $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _FeedGetLikesOutput() when $default != null:
return $default(_that.uri,_that.cid,_that.cursor,_that.likes,_that.$unknown);case _:
  return orElse();
}
}