public OpsItemNotification withArn(String arn) {
        setArn(arn);
        return this;
    }
<p>
The Amazon Resource Name (ARN) of an Amazon Simple Notification Service (Amazon SNS) topic where notifications
are sent when this OpsItem is edited or changed.
</p>

@param arn
       The Amazon Resource Name (ARN) of an Amazon Simple Notification Service (Amazon SNS) topic where
       notifications are sent when this OpsItem is edited or changed.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/OpsItemNotification.java