Caldav google calendar problem

Ok. I tested it a litte bit. Can somebody of you test it “really”. I am not using the Google calendar.

io binding

Description for getting client id

caldavio:openhab_tasks:url=https://apidata.googleusercontent.com/caldav/v2/address@gmail.com/events
caldavio:openhab_tasks:oauth=true
# client_id for OAuth
caldavio:openhab_tasks:username=client-id-a-very-long-value
# client_secret for OAuth
caldavio:openhab_tasks:password=a-little-bit-shorter
caldavio:openhab_tasks:reloadInterval=30
caldavio:openhab_tasks:preloadTime=10080

caldavio:timeZone=Europe/Berlin

After you started the binding first you have to authorize openhab to access your calendar.
Therefore this log entries occur in the logfile with log-level warn

authentication required for account with client_id=your-client-id
user_code=user-code-to-be-entered-in-the-website
verification_url=url-to-enter-the-code