code: public static HttpURLConnection peekMessages(final URI uri, final QueueRequestOptions queueOptions,
              final OperationContext opContext, final int numberOfMessages) throws URISyntaxException, IOException,
              StorageException {
  
          final UriQueryBuilder builder = new UriQueryBuilder();
          builder.add(PEEK_ONLY, "true");
  
          if (numberOfMessages != 0) {
              builder.add(NUMBER_OF_MESSAGES, Integer.toString(numberOfMessages));
          }
  
          final HttpURLConnection request = BaseRequest.createURLConnection(uri, queueOptions, builder, opContext);
  
          request.setRequestMethod(Constants.HTTP_GET);
  
          return request;
      }
docs: Constructs a web request to retrieve a specified number of messages from
  the front of the queue without changing their visibility. Sign the web
  request with a length of -1L.
  
  @param uri
  A <code>URI</code> object that specifies the absolute URI to
  the queue.
  @param queueOptions
  A {@link QueueRequestOptions} object that specifies execution options such as retry policy and timeout
  settings for the operation. Specify <code>null</code> to use the request options specified on the
  {@link CloudQueueClient}.
  @param opContext
  An {@link OperationContext} object that represents the context
  for the current operation. This object is used to track
  requests to the storage service, and to provide additional
  runtime information about the operation.
  @param numberOfMessages
  A nonzero value that specifies the number of messages to
  retrieve from the queue, up to a maximum of 32.
  @return An <code>HttpURLConnection</code> configured for the specified
  operation.
  
  @throws IOException
  @throws URISyntaxException
  If the URI is not valid.
  @throws StorageException
  If a storage service error occurred during the operation.