分页列举全部多版本对象

以下代码展示分页列举全部多版本对象：

// 初始化配置参数ObsConfig config = new ObsConfig();config.Endpoint = "https://your-endpoint";// 认证用的ak和sk硬编码到代码中或者明文存储都有很大的安全风险，建议在配置文件或者环境变量中密文存放，使用时解密，确保安全；本示例以ak和sk保存在环境变量中为例，运行本示例前请先在本地环境中设置环境变量AccessKeyID和SecretAccessKey。// 您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.htmlstring accessKey= Environment.GetEnvironmentVariable("AccessKeyID", EnvironmentVariableTarget.Machine);string secretKey= Environment.GetEnvironmentVariable("SecretAccessKey", EnvironmentVariableTarget.Machine);// 创建ObsClient实例ObsClient client = new ObsClient(accessKey, secretKey, config);//分页列举全部多版本对象try{    ListVersionsRequest request = new ListVersionsRequest();    request.BucketName = "bucketname";    request.MaxKeys = 100;    ListVersionsResponse response;    do    {        response = client.ListVersions(request);        Console.WriteLine("List versions response: {0}", response.StatusCode);        foreach (ObsObjectVersion objectVersion in response.Versions)        {            Console.WriteLine("Key: {0}", objectVersion.ObjectKey);            Console.WriteLine("VersionId: {0}", objectVersion.VersionId);        }        request.KeyMarker = response.NextKeyMarker;        request.VersionIdMarker = response.NextVersionIdMarker;    }    while (response.IsTruncated);}catch (ObsException ex){    Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);    Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);}