code: @Override
      public java.util.concurrent.Future<ConfirmSubscriptionResult> confirmSubscriptionAsync(String topicArn, String token, String authenticateOnUnsubscribe) {
  
          return confirmSubscriptionAsync(new ConfirmSubscriptionRequest().withTopicArn(topicArn).withToken(token)
                  .withAuthenticateOnUnsubscribe(authenticateOnUnsubscribe));
      }
docs: Simplified method form for invoking the ConfirmSubscription operation.
  
  @see #confirmSubscriptionAsync(ConfirmSubscriptionRequest)