getContractAuth method Null safety

List<ContractAuth>? getContractAuth()

Implementation

List<ContractAuth>? getContractAuth() {
  if (results != null && results!.length > 0 && results![0].auth != null) {
    List<ContractAuth> result = List<ContractAuth>.empty(growable: true);
    for (String nextAuthXdr in results![0].auth!) {
      result.add(ContractAuth.fromBase64EncodedXdr(nextAuthXdr));
    }
    return result;
  }
  return null;
}