copyWith method
Implementation
@override
JsonValueNull copyWith({
  dynamic extra,
  int? clientId,
}) =>
    JsonValueNull(
      extra: extra ?? this.extra,
      clientId: clientId ?? this.clientId,
    );@override
JsonValueNull copyWith({
  dynamic extra,
  int? clientId,
}) =>
    JsonValueNull(
      extra: extra ?? this.extra,
      clientId: clientId ?? this.clientId,
    );