code: def tearDown(self):
      shutil.rmtree(self.test_dir)
  
imports: import io
  import json
  import logging
  import shutil
  import tempfile
  from pathlib import Path
  from typing import Dict, Any
  from unittest import TestCase
  import toml
  from transfer_nlp.plugins.config import register_plugin, ExperimentConfig
  from transfer_nlp.plugins.reporters import ReporterABC
  from transfer_nlp.plugins.trainer_abc import TrainerABC
  from transfer_nlp.runner.experiment_runner import ExperimentRunner
label_desc: Use image node_id 2 for calling the ExperimentRunnerTest obj's underlying member method code with example usage: obj.tearDown() without return types