How to add automation when Nest hello doorbell is rang?
I have all options and switches enabled in homebridge. 
I see 3 switches in the home app (chime, audio, streaming) they are all turned on.
When the doorbell is rang there doesn't seem to be any event or switch to hook an automation into.

The documentation howere lists that it shoul be possible
`Receive notifications and set routines for motion or when the doorbell is rang.`

But it doesn't mention how this can be achieved.

Thanks in advance
