What is the problem that needs to be solved? Provide size (in bytes) in GET /groups/{GROUP-ID}/clusters/{CLUSTER-NAME}/backup/snapshots Public API call for each snapshotId

Why is it a problem? (the pain) You're doing your own automation with manual restore, and you can't programmatically know the actual filesize of .tar.gz file you'll be downloading for each snapshotId listed in GET /groups/{GROUP-ID}/clusters/{CLUSTER-NAME}/backup/snapshots Public API call until you actually download .tar.gz file for each snapshotId.