public void setRuleGroup(RuleGroupDetails ruleGroup) {
        this.ruleGroup = ruleGroup;
    }
<p>
Details about the rule group.
</p>

@param ruleGroup
       Details about the rule group.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsNetworkFirewallRuleGroupDetails.java