Before we can call a Google API, we have to obtain an OAuth access token. As we learned before, there are different types of access tokens, and service account access tokens are a little different from user access tokens. The vast majority of Google Cloud APIs don’t discriminate between these two types of token and work with both. But beyond Google Cloud, there are still many Google APIs that don’t accept service account access tokens. If we want to use these APIs in an unattended scenari...
