Fetch contact / friend list through API call?

I’ve flipped through the documentation but couldn’t find a reference for fetching a user’s contact / friend list (I am referring to the Battle.net “cross-games” list).
Did I miss something or is this feature not implemented yet? If that is the case, is there any explanation why it’s not implemented?
Kind regards

There are no endpoints to get the friend list of a user.

Wow. As I feared. This is incredible if you think how central friend list is to a user’s gaming experience.