Required properties:
drive<string>Drive Identifier.
pool<string>Media pool name.
store<string>Datastore name.
Optional properties:
comment<string>Comment (single line).
schedule<calendar-event>Run sync job at specified schedule.
eject-media<boolean>Eject media upon job completion.
export-media-set<boolean>Export media set upon job completion.
latest-only<boolean>Backup latest snapshots only.
notify-user<string>User ID