polkit.addRule(function(action, subject) {
 polkit.log("action=" + action);
 polkit.log("subject=" + subject);
 var now = new Date();
 polkit.log("now=" + now)
 if ((action.id == "org.libvirt.unix.manage" || action.id == "org.libvirt.unix.monitor") && subject.isInGroup("virt")) {
    return polkit.Result.YES;
 }
 return null;
});