I was wondering if Adobe had any future development plans to allow a client to request a list of IDs that are currently setup in a given recommendations environment. Right now, I feel like only 2 of the 3 pieces exist to effectively manage entities. I can use the GET entities to retrieve an entity, and I can use DELETE to delete an entity. But, there doesn't seem to be a mechanism to simply get a list of ids that are present in the environment. If this capability existed, one could theoretically download the list of ids and easily do the equivalent of a full join operation (against internal systems) and easily determine if any entities were missing (and then post with a SAVE request) and entities that were obsolete (and then remove with a DELETE request).