code: def tearDown(self):
      self.mlmd_handle.__exit__(None, None, None)
      super().tearDown()
  
imports: import os
  from absl.testing import parameterized
  from absl.testing.absltest import mock
  import tensorflow
  from tfx.dsl.io import fileio
  from tfx.orchestration import data_types_utils
  from tfx.orchestration import metadata
  from tfx.orchestration.experimental.core import component_generated_alert_pb2
  from tfx.orchestration.experimental.core import constants
  from tfx.orchestration.experimental.core import event_observer
  from tfx.orchestration.experimental.core import post_execution_utils
  from tfx.orchestration.experimental.core import task
  from tfx.orchestration.experimental.core import task_scheduler
  from tfx.orchestration.experimental.core import test_utils
  from tfx.orchestration.portable import data_types
  from tfx.orchestration.portable import execution_publish_utils
  from tfx.proto.orchestration import execution_invocation_pb2
  from tfx.proto.orchestration import execution_result_pb2
  from tfx.proto.orchestration import pipeline_pb2
  from tfx.types import standard_artifacts
  from tfx.utils import status
  from tfx.utils import test_case_utils
  from ml_metadata import proto
label_desc: Use image node_id 2 for calling the PostExecutionUtilsTest obj's underlying member method code with example usage: obj.tearDown() without return types