Doorbell Nest Hello

Anybody here who got the Doorbell works with openhab Nest binding?

How to connect them?

Thx.

It is supposed to show up as a camera. See also Nest Binding Support for Hello Doorbell.

No idea how to connect it.
Made an OAuthClient at https://console.developers.nest.com/products, but how to connect the OAuthClient with my doorbell?

thx.