Hm, this lists the snapshots for the persistent disks, right?

Compute part of the API does include some standard methods and classes for managing block storage volumes and snapshots. `list_volume_snapshots` is one of the supported methods.

The problem is that those methods refer to the block storage volumes which are not the same as instance storage (or persistent disks in this case), so I'm not yet sure what we should do here.

I need to have a better look and think some more about it. I just want to make sure this whole thing doesn't confuse the user.