Flutter: Gsheets。有没有办法在没有键的情况下拉取值？

import 'package:googleapis/sheets/v4.dart' as sheets;
import 'package:http/http.dart' as http;
import 'dart:convert';

void main() async {
  // 读取JSON密钥文件
  var credentials = new sheets.ServiceAccountCredentials.fromJson({
    "private_key": "YOUR_PRIVATE_KEY",
    "client_email": "YOUR_CLIENT_EMAIL",
    // 其他必要的字段...
  });

  // 创建HTTP客户端并进行身份验证
  var client = await http.Client().authenticateViaServiceAccount(credentials);

  // 创建Google Sheets API的客户端
  var api = new sheets.SheetsApi(client);

  // 读取数据
  var spreadsheetId = "YOUR_SPREADSHEET_ID";
  var range = "Sheet1!A1:B2";
  var response = await api.spreadsheets.values.get(spreadsheetId, range);

  // 解析响应数据
  var values = response.values;
  if (values != null) {
    for (var row in values) {
      for (var cell in row) {
        print(cell);
      }
    }
  }
}