public CreateRuleGroupResult withRuleGroup(RuleGroup ruleGroup) {
        setRuleGroup(ruleGroup);
        return this;
    }
<p>
An empty <a>RuleGroup</a>.
</p>

@param ruleGroup
       An empty <a>RuleGroup</a>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-waf/src/main/java/com/amazonaws/services/waf/model/CreateRuleGroupResult.java