[ovirt-users] what is detach_only with VM delete

I'm using the python sdk to detroy VM. I supposed the param action.vm.disks.detach_only is the same thing that the check box "Remove Disk(s)" But once i try to manage it with: action_params = params.Action( vm=params.VM( disks=params.Disks( detach_only=detach_only_flag, ), ), ) The disk is not destroyed, whatever detach_only_flag is True of False. If detach_only is not defined in params.Disks, everything is fine, the disk is destroyed. But the included comments in brokers.py says: [@param action.vm.disks.detach_only: boolean] Did I miss something ?