FindDeviceByID dose not work

[lijinmin]

`

id := "FA68B0301122"
device, err := mgr.FindDeviceByID(id)
if err != nil {
	log.Error(err)
	return
}
//device.
log.Debug(device.Name(), device.ID())
session, err := device.Attach("rock_paper_scissors", nil)
if err != nil {
	log.Error(err)
	return
}

`

then I got:
[error] could not attach for nil device

but if i change the codes like this:
`

id := "FA68B0301122"
device, err := mgr.FindDeviceByID(id)
if err != nil {
	log.Error(err)
	return
}
//device.
log.Debug(device.Name(), device.ID())
if device.Name() == "" {
	devices, err := mgr.EnumerateDevices()
	if err != nil {
		log.Error(err)
		return
	}
	for _, d := range devices {
		if d.ID() == id {
			device = d
			break
		}
	}
}
log.Debug(device.Name(), device.ID())
session, err := device.Attach("rock_paper_scissors", nil)
if err != nil {
	log.Error(err)
	return
}

`
it works
[debug] Pixel FA68B0301122

[NSEcho]

Hey, that is by Frida's design because signals for device are not triggered until EnumerateDevices is called