code: func WmStateSet(xu *xgbutil.XUtil, win xproto.Window, state *WmState) error {
  	raw := []uint{
  		state.State,
  		uint(state.Icon),
  	}
  
  	return xprop.ChangeProp32(xu, win, "WM_STATE", "WM_STATE", raw...)
  }
docs: // WM_STATE set