code: def _convert_service_account_credentials(credentials):
      
      info = credentials.serialization_data.copy()
      info['token_uri'] = credentials.token_uri
      return google.oauth2.service_account.Credentials.from_service_account_info(
          info)
docs: Converts to :class:`google.oauth2.service_account.Credentials`.
  
      Args:
          credentials (Union[
              oauth2client.service_account.ServiceAccountCredentials,
              oauth2client.service_account._JWTAccessCredentials]): The
              credentials to convert.
  
      Returns:
          google.oauth2.service_account.Credentials: The converted credentials.