public void setRuleGroup(RuleGroup ruleGroup) {
        this.ruleGroup = ruleGroup;
    }
<p>
An empty <a>RuleGroup</a>.
</p>

@param ruleGroup
       An empty <a>RuleGroup</a>.
aws-java-sdk-waf/src/main/java/com/amazonaws/services/waf/model/CreateRuleGroupResult.java