public static void GetBucketWebsite(string bucketName)
        {
            try
            {
                var result = client.GetBucketWebsite(bucketName);

                Console.WriteLine("Get bucket:{0} Wetbsite succeeded, index doc:{1}, error doc:{2}",
                                  bucketName, result.IndexDocument, result.ErrorDocument);
            }
            catch (OssException ex)
            {
                Console.WriteLine("Failed with error info: {0}; Error info: {1}. \nRequestID:{2}\tHostID:{3}",
                                  ex.ErrorCode, ex.Message, ex.RequestId, ex.HostId);
            }
            catch (Exception ex)
            {
                Console.WriteLine("Failed with error info: {0}", ex.Message);
            }
        }