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 ownerDid,
    9. int requestMembersCount,
    10. String rev,
    11. String subjectDid,
    12. bool subjectFollowsOwner,
    13. 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 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;

}
}