anchor.diff:  
     credentialsFile.writeAsStringSync(prettyJsonEncode(credentials));
   
  -  print(
  +  stderr.writeln(
       '* Credentials expire in '
       '${credentials.accessToken.expiry.difference(DateTime.now())} *',
     );
  
positive.code: }
  
  void _prompt(String url) {
    print('Please go to the following URL and grant access:');
    print('  => $url');
    print('');
  }
  
  String prettyJsonEncode(Object? object) =>
  
negative.code:       credentials = await refreshCredentials(clientId, credentials, client);
      } else {
        credentials = null;
        stderr.writeln(
            'Cached credentials lack the requested scopes - doing auth!');
      }
    }
  
  