This is currently not on our roadmap. You can retrieve this value by making a call through the Graph API. If this is needed for your scenarios, please continue voting and we will review at a later date.
An error occurred while saving the commentmwardm commented
Yep, required. (This kind of thing seems fairly obvious, Microsoft - maybe you could do with some extra sanity-check steps during initial development where this type of thing is much cheaper to add?)