code: def _restore(self, exp_name, local_dir, absolute_local_dir):
      trial_name, abs_trial_dir = self._get_trial_dir(
          os.path.join(absolute_local_dir, exp_name)
      )
  
      checkpoint_path = os.path.join(
          local_dir, exp_name, trial_name, "checkpoint_000000"
      )
      assert os.path.exists(os.path.expanduser(checkpoint_path))
  
      (trial,) = tune.run(
          self.MockTrainable,
          name=exp_name,
          stop={"training_iteration": 2},  # train one more iteration.
          restore=checkpoint_path,  # Restore the checkpoint
          config={"env": "CartPole-v0", "log_level": "DEBUG"},
      ).trials
      self.assertIsNone(trial.error_file)
  
imports: import os
  import pickle
  import shutil
  import tempfile
  import unittest
  import pytest
  import ray
  from ray import tune
  from ray.train import CheckpointConfig
  from ray.tune import Trainable
  from ray.tune.utils import validate_save_restore
label_desc: Use image node_id 6 for calling the SerialTuneRelativeLocalDirTest obj's underlying member method code with example usage: obj._restore(exp_name, local_dir, absolute_local_dir) without return types