public void setRuleGroupArn(String ruleGroupArn) {
        this.ruleGroupArn = ruleGroupArn;
    }
<p>
The ARN of the rule group.
</p>

@param ruleGroupArn
       The ARN of the rule group.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsNetworkFirewallRuleGroupDetails.java