public MultiRegionKey withArn(String arn) {
        setArn(arn);
        return this;
    }
<p>
Displays the key ARN of a primary or replica key of a multi-Region key.
</p>

@param arn
       Displays the key ARN of a primary or replica key of a multi-Region key.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-kms/src/main/java/com/amazonaws/services/kms/model/MultiRegionKey.java