public void setARN(String aRN) {
        this.aRN = aRN;
    }
<p>
The Amazon Resource Name (ARN) of the entity.
</p>

@param aRN
       The Amazon Resource Name (ARN) of the entity.
aws-java-sdk-wafv2/src/main/java/com/amazonaws/services/wafv2/model/GetRuleGroupRequest.java