[ovirt-devel] Question regarding support of incremental backups in 4.3.2

Hi, It seems there is an incomplete or missing support for incremental backup in 4.3.2. Need your clarifications in this regard. The API for a VM (/ovirt-engine/api/vms/<vm-id>) shows the links to <vm-id>/backups service. Also there is an option to enable incremental backup for a disk in the user interface. This makes me believe the incremental backups are supported, however accessing the <vm-id>/backups service gives an empty output. Could you please clarify, whether incremental backup feature is supported in 4.3.2 and I'm trying to use it incorrectly or is this service just a stub for now? Many thanks and regards, Anton Erdman.