code: @DoesServiceRequest
      public QueuePermissions downloadPermissions(QueueRequestOptions options, OperationContext opContext)
              throws StorageException {
          if (opContext == null) {
              opContext = new OperationContext();
          }
  
          opContext.initialize();
          options = QueueRequestOptions.populateAndApplyDefaults(options, this.queueServiceClient);
  
          return ExecutionEngine.executeWithRetry(this.queueServiceClient, this, this.downloadPermissionsImpl(options),
                  options.getRetryPolicyFactory(), opContext);
      }
docs: Downloads the permissions settings for the queue using the specified request options and operation context.
  
  @param options
  A {@link QueueRequestOptions} object that specifies any additional options for the request. Specifying
  <code>null</code> will use the default request options from the associated service client (
  {@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.
  
  @return A {@link QueuePermissions} object that represents the container's permissions.
  
  @throws StorageException
  If a storage service error occurred.