https://plswiderski.medium.com/google-api-authentication-with-oauth-2-on-the-example-of-gmail-a103c897fd98

Tady je popis jak ziskat access a refresh token. V kroku "Confirm permissions request" nemusis pouzivat SoapUI postaci curl:

curl -X POST https://www.googleapis.com/oauth2/v4/token \
   -d client_id=tvoje_client_id \
   -d client_secret=tvuj_client_secret \
   -d code=kod_ziskany_z_redirectu_na_localhost \
   -d grant_type=authorization_code \
   -d redirect_uri=http://localhost