code: def testTempfile(self):
      local_dir = tempfile.mkdtemp()
      exp_name = self.prefix + "Tempfile"
      self.absolute_local_dir = local_dir
      self._train(exp_name, local_dir, local_dir)
      self._restore(exp_name, local_dir, local_dir)
  
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 7 for calling the SerialTuneRelativeLocalDirTest obj's underlying member method code with example usage: obj.testTempfile() without return types