Need chains array in Namespace class

[muhammad-hassan-shakeel]

@freezed
class Namespace with _$Namespace {
  @JsonSerializable()
  const factory Namespace({
    required List<String> accounts,
    required List<String> methods,
    required List<String> events,
  }) = _Namespace;

  factory Namespace.fromJson(Map<String, dynamic> json) =>
      _$NamespaceFromJson(json);
}

This is the Namespace class, we are developing some application where I need to connect with the Unity app of ours via WalletConnect. Unity team is looking for chains list in Namespace but unfortunately it doesn't have it. Can you please tell me what can I do on flutter end to send that to them at the time of Session approval?