code: def _assertPushedModelHasWarmup(self):
      pushed_model = self._get_latest_output_artifact(
          "Pusher", "pushed_model"
      )
      self._assertFileExists(
          path_utils.warmup_file_path(pushed_model.uri)
      )
  
imports: import os
  import subprocess
  from absl.testing import parameterized
  import tensorflow
  from tfx.dsl.io import fileio
  from tfx.examples.penguin import penguin_pipeline_local_infraval
  from tfx.orchestration import metadata
  from tfx.orchestration.local.local_dag_runner import LocalDagRunner
  from tfx.utils import path_utils
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 6 for calling the PenguinPipelineLocalInfravalEndToEndTest obj's underlying member method code with example usage: obj._assertPushedModelHasWarmup() without return types