Amazon.SQS.AmazonSQSClient.ChangeMessageVisibilityBatch C# (CSharp) Method

        public ChangeMessageVisibilityBatchResponse ChangeMessageVisibilityBatch(ChangeMessageVisibilityBatchRequest request)
        {
            var marshaller = new ChangeMessageVisibilityBatchRequestMarshaller();
            var unmarshaller = ChangeMessageVisibilityBatchResponseUnmarshaller.Instance;

            return Invoke<ChangeMessageVisibilityBatchRequest,ChangeMessageVisibilityBatchResponse>(request, marshaller, unmarshaller);
        }

    public static void SQSChangeMessageVisibilityBatch()
    {
      #region SQSChangeMessageVisibilityBatch
      var client = new AmazonSQSClient();

      var url = "https://sqs.us-east-1.amazonaws.com/80398EXAMPLE/MyTestQueue";

      // Receive messages.
      var msgRequest = new ReceiveMessageRequest
      {
        AttributeNames = new List<string>() { "All" },
        QueueUrl = url
      };

      var msgResponse = client.ReceiveMessage(msgRequest);

      // Change visibility timeout for each message.
      if (msgResponse.Messages.Count > 0)
      {
        var entries = new List<ChangeMessageVisibilityBatchRequestEntry>();

        int numMessages = 0;

        foreach (var message in msgResponse.Messages)
        {
          numMessages += 1;

          var entry = new ChangeMessageVisibilityBatchRequestEntry
          {
            Id = "Entry" + numMessages.ToString(),
            ReceiptHandle = message.ReceiptHandle,
            VisibilityTimeout = (int)TimeSpan.FromMinutes(10).TotalSeconds
          };

          entries.Add(entry);
        }

        var batRequest = new ChangeMessageVisibilityBatchRequest
        {
          Entries = entries,
          QueueUrl = url
        };

        var batResponse = client.ChangeMessageVisibilityBatch(batRequest);

        Console.WriteLine("Successes: " + batResponse.Successful.Count +
          ", Failures: " + batResponse.Failed.Count);

        if (batResponse.Successful.Count > 0)
        {
          foreach (var success in batResponse.Successful)
          {
            Console.WriteLine("  Success ID " + success.Id);
          }
        }

        if (batResponse.Failed.Count > 0)
        {
          foreach (var fail in batResponse.Failed)
          {
            Console.WriteLine("  Failure ID " + fail.Id + ":");
            Console.WriteLine("    Code: " + fail.Code);
            Console.WriteLine("    Message: " + fail.Message);
            Console.WriteLine("    Sender's fault?: " + fail.SenderFault);
          }
        }
      }
      #endregion

      Console.ReadLine();
    }