def METHOD_NAME(self, mock_access_token):
    env = EnvironmentVarGuard()
    env.set('KAGGLE_USER_SECRETS_TOKEN', 'foobar')
    with env:
        proxy_client = bigquery.Client(client_options={"api_endpoint": TestBigQuery.API_BASE_URL})
        bq_client = bigquery.Client(
            project='ANOTHER_PROJECT', credentials=KaggleKernelCredentials(), client_options={"api_endpoint": TestBigQuery.API_BASE_URL})
        self._test_integration(bq_client)
        # Verify that proxy client is still going to proxy to ensure global Connection
        # isn't being modified.
        self.assertNotEqual(type(proxy_client._connection), KaggleKernelCredentials)
        self.assertEqual(type(proxy_client._connection), _DataProxyConnection)