public String getNotificationTargetARN() {
        return this.notificationTargetARN;
    }
<p>
The Amazon Resource Name (ARN) of the notification target that Amazon EC2 Auto Scaling sends notifications to
when an instance is in a wait state for the lifecycle hook. You can specify an Amazon SNS topic or an Amazon SQS
queue.
</p>

@return The Amazon Resource Name (ARN) of the notification target that Amazon EC2 Auto Scaling sends
        notifications to when an instance is in a wait state for the lifecycle hook. You can specify an Amazon
        SNS topic or an Amazon SQS queue.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/LifecycleHookSpecification.java