code: def _verify_output(self, tuner):
      self.assertEqual(
          standard_artifacts.HyperParameters.TYPE_NAME,
          tuner.outputs["best_hyperparameters"].type_name,
      )
  
file_path: tfx/tfx/extensions/google_cloud_ai_platform/tuner/component_test.py
imports: import tensorflow
  from tfx.extensions.google_cloud_ai_platform.tuner import component
  from tfx.proto import trainer_pb2
  from tfx.proto import tuner_pb2
  from tfx.types import channel_utils
  from tfx.types import standard_artifacts
label_desc: Use image node_id 2 for calling the TunerTest obj's underlying member method code with example usage: obj._verify_output(tuner) without return types