For optimistic concurrency control. See {@code if-match}.
Unique Oracle-assigned identifier for the request. If you need to contact Oracle about a particular request, please provide the request ID.
The OCID of the work request. Multiple OCID values are returned in a comma-separated list. Use {@link #getWorkRequest(GetWorkRequestRequest) getWorkRequest} with a work request OCID to track the status of the request.
The returned model.Backup instance.