Visitor constructor

Visitor({
  1. String? id,
  2. String? uid,
})

Implementation

factory Visitor({
  String? id,
  String? uid,
}) {
  if (uid != null && uid.isEmpty) {
    throw ArgumentError('Must not be empty', 'uid');
  }

  return Visitor._(
    id: id,
    uid: uid,
  );
}