code: func KeysymGetWithMap(xu *xgbutil.XUtil, keyMap *xgbutil.KeyboardMapping,
  	keycode xproto.Keycode, column byte) xproto.Keysym {
  
  	min, _ := minMaxKeycodeGet(xu)
  	i := (int(keycode)-int(min))*int(keyMap.KeysymsPerKeycode) + int(column)
  
  	return keyMap.Keysyms[i]
  }
docs: // KeysymGetWithMap uses the given key map and finds a keysym associated
  // with the given keycode in the current X environment.