docstr: Verify that get_suggestion gracefully handles 429 errors.
docstr_tok: ["Verify","that","get_suggestion","gracefully","handles","429","errors","."]
code: def test_get_suggestions_with_429(self):
      """Verify that get_suggestion gracefully handles 429 errors."""
      mock_request = mock.MagicMock()
      mock_request.execute.side_effect = errors.HttpError(
          httplib2.Response(info={"status": 429}), b""
      )
      mock_suggest = mock.MagicMock()
      mock_suggest.return_value = mock_request
      self._mock_discovery.projects().locations().studies().trials().suggest = (
          mock_suggest
      )
  
      suggestions = self._client.get_suggestions("tuner_0")
      self.assertEqual(suggestions, [])
  
imports: from googleapiclient import errors
  import httplib2
  import mock
  import tensorflow
  from tensorflow_cloud.tuner import vizier_client
label_desc: Use image node_id 9 for calling the VizierClientTest obj's underlying member method code with example usage: obj.test_get_suggestions_with_429() without return types