whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<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 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,  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() when $default != null:
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 _:
  return null;

}
}