code: func RestackWindowExtra(xu *xgbutil.XUtil, win xproto.Window, stackMode int,
  	sibling xproto.Window, source int) error {
  
  	return ClientEvent(xu, win, "_NET_RESTACK_WINDOW", source, int(sibling),
  		stackMode)
  }
docs: // _NET_RESTACK_WINDOW req extra