Authenticate using an `access_token`

[varun-dc]

I'm trying to use an access_token which I get from the OAuth2Client (google-auth-library). But I'm not seeing any way to initializing or providing BigQuery with this token.

There's a few older issues discussing access_tokens but in the current version of the library I'm not seeing any way of achieving this. Was this feature removed? Can we add it back?

The older issues that mention access_token:

• https://github.com/googleapis/nodejs-bigquery/issues/68
• https://github.com/googleapis/nodejs-common/issues/11

If I can be of any more help or you need any additional details, let me know.