[SyncEvolution] restore api?

Hi Yongsheng, everyone, Is there any news on the api for restoring backups? I don't need to know the details right now, but it would be great to know the big picture. I see I get backup identifiers from the sync reports. Can I expect that I can then just call a Session restore method with that identifier and list of sources I want to restore or is there something more complicated? I assume there will be status signals. Anything else? What should happen after the restore? A refresh from client? - Jussi