Any entity which is configured to be "indexable` via the XF:Indexable entity behavior and is configured to enqueueIndexNow now requires the implementation of the new ViewableInterface. This is to ensure that your entity has an appropriate canView method so that we can determine content is viewable by a guest before submission to IndexNow. Developers will need to implement this interface and add a canView method (if needed) to ensure content can be submitted to IndexNow.
