public String getSnsTopicArn() {
        return this.snsTopicArn;
    }
<p>
The Amazon resource name (ARN) of the Amazon Simple Notification Service SNS topic that's used to provide
notification of changes to the managed rule group. You can subscribe to the SNS topic to receive notifications
when the managed rule group is modified, such as for new versions and for version expiration. For more
information, see the <a href="https://docs.aws.amazon.com/sns/latest/dg/welcome.html">Amazon Simple Notification
Service Developer Guide</a>.
</p>

@return The Amazon resource name (ARN) of the Amazon Simple Notification Service SNS topic that's used to provide
        notification of changes to the managed rule group. You can subscribe to the SNS topic to receive
        notifications when the managed rule group is modified, such as for new versions and for version
        expiration. For more information, see the <a
        href="https://docs.aws.amazon.com/sns/latest/dg/welcome.html">Amazon Simple Notification Service
        Developer Guide</a>.
aws-java-sdk-wafv2/src/main/java/com/amazonaws/services/wafv2/model/DescribeManagedRuleGroupResult.java