onResonse method
Implementation
@override
List<SignatureStatus?> onResonse(List result) {
  return result
      .map((e) => e == null ? null : SignatureStatus.fromJson(e))
      .toList();
}@override
List<SignatureStatus?> onResonse(List result) {
  return result
      .map((e) => e == null ? null : SignatureStatus.fromJson(e))
      .toList();
}