zwaveInfo

Does anyone know where you can use zwaveInfo (if anywhere) and how? I see it in drivers posted here from time to time, but it seems to return null when it's called. Is it implemented on Hubitat?

If not, should we be using events and parsing responses to store in the device data to get the information it usually stores?

I haven't bumped into getZwaveInfo since I looked at a port of SmartThings ZwaveTweeker... 7 months or more ago. At that time it wasn't implemented on Hubitat and wasn't going to be.