In what format is the AccessToken returned in expo-uth-session?

Question

Google

Good day. I take the expo doc https://docs.expo.dev/guides/authentication/#google
I do everything as there and I get a response.authentication.accessToken like this:

"access_token": "ya29.A0ARrdaM_c2N7kV9vzzg3tZkY5jbXgUl5XqF7yUDjVdo4MhlTdjtl7UXafN-fYe0svEs8cdEMULcdEFhg3i2fFbTCRAKSEcsT1wnmy59P900ECQYFrenptfM6iEel20_1EvFG3zB2RYYYYyyyZRqLkd0UvbEHT",

Accordingly, it cannot be parsed and cannot be inserted into the header.

And since I'm here. I don’t see any methods for logout in this fashionable expo auth session

Thank you all