code: def _convert_oauth2_credentials(credentials):
      
      new_credentials = google.oauth2.credentials.Credentials(
          token=credentials.access_token,
          refresh_token=credentials.refresh_token,
          token_uri=credentials.token_uri,
          client_id=credentials.client_id,
          client_secret=credentials.client_secret,
          scopes=credentials.scopes)
  
      new_credentials._expires = credentials.token_expiry
  
      return new_credentials
docs: Converts to :class:`google.oauth2.credentials.Credentials`.
  
      Args:
          credentials (Union[oauth2client.client.OAuth2Credentials,
              oauth2client.client.GoogleCredentials]): The credentials to
              convert.
  
      Returns:
          google.oauth2.credentials.Credentials: The converted credentials.