Whether to attempt to refresh tokens on status 401/403 responses even if an attempt is made to refresh the token preemptively based on the expiry_date.
The scopes that will be requested when acquiring service account credentials. Only applicable to modern App Engine and Cloud Function runtimes as of March 2019.
The service account email to use, or 'default'. A Compute Engine instance may have multiple service accounts.
A Gaxios or Transporter instance to use for AuthClient requests.
Provides default options to the transporter, such as agent or
retryConfig.
The expiration threshold in milliseconds before forcing token refresh of unexpired tokens.