public TagRequest withArn(String arn) {
        setArn(arn);
        return this;
    }
<p>
The ARN of the resource group to which to add tags.
</p>

@param arn
       The ARN of the resource group to which to add tags.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-resourcegroups/src/main/java/com/amazonaws/services/resourcegroups/model/TagRequest.java