code: func internalGetTitle(pid int32, args ...int32) string {
  	var hwnd int32
  	if len(args) > 0 {
  		hwnd = args[0]
  
  		return cgetTitle(pid, hwnd)
  	}
  
  	xid, err := GetXId(xu, pid)
  	if err != nil {
  		log.Println("GetXidFromPid errors is: ", err)
  		return ""
  	}
  
  	return cgetTitle(int32(xid), hwnd)
  }
docs: // internalGetTitle get the window title