title: how do you get the id or url of the resource that's being updated when handling an Update_Of_Resource notification?
body: <p>When handling a <code>Update_Of_Resource</code> notification, when the subscription's <code>notificationContentType</code> is set to <code>Modified Attribute</code>, how does one get the <code>Id</code> or <code>Url</code> of the resource being updated?</p>