public void setNotificationTopicArn(String notificationTopicArn) {
        this.notificationTopicArn = notificationTopicArn;
    }
<p>
The Amazon Resource Name (ARN) that identifies the topic.
</p>

@param notificationTopicArn
       The Amazon Resource Name (ARN) that identifies the topic.
aws-java-sdk-dax/src/main/java/com/amazonaws/services/dax/model/UpdateClusterRequest.java