public String getNotificationMetadata() {
        return this.notificationMetadata;
    }
<p>
Additional information that you want to include any time Amazon EC2 Auto Scaling sends a message to the
notification target.
</p>

@return Additional information that you want to include any time Amazon EC2 Auto Scaling sends a message to the
        notification target.
aws-java-sdk-autoscaling/src/main/java/com/amazonaws/services/autoscaling/model/LifecycleHookSpecification.java