如何在graphql_flutter中重试GraphQLError上的请求

import 'package:graphql_flutter/graphql_flutter.dart';

void main() async {
  final HttpLink httpLink = HttpLink(
    uri: 'https://your-graphql-endpoint',
  );

  final ErrorLink errorLink = ErrorLink(
    onError: (ErrorResponse response) {
      // 检查错误类型
      if (response.error != null) {
        // 如果是GraphQLError，执行重试逻辑
        if (response.error is GraphQLError) {
          // 配置重试选项
          final RetryOptions retryOptions = RetryOptions(
            maxAttempts: 3,
            delayFactor: Duration(seconds: 1),
          );

          // 执行重试逻辑
          return retryOptions.retry(
            httpLink.request,
            response,
          );
        }
      }

      // 如果不是GraphQLError，继续传递错误
      return response;
    },
  );

  final Link link = errorLink.concat(httpLink);

  final GraphQLClient client = GraphQLClient(
    cache: GraphQLCache(),
    link: link,
  );

  final QueryResult result = await client.query(QueryOptions(
    document: gql('your-graphql-query'),
  ));

  if (result.hasException) {
    print('GraphQL Error: ${result.exception.toString()}');
  } else {
    print('GraphQL Data: ${result.data.toString()}');
  }
}