code: def tearDown(self):
      if os.path.exists(self.data_cache_path):
          os.remove(self.data_cache_path)
  
      if os.path.exists(self.vectors_cache_dir):
          shutil.rmtree(self.vectors_cache_dir)
  
imports: from nose.tools import *
  import io
  import os
  import shutil
  import pandas
  import torch
  import unittest
  from deepmatcher import attr_summarizers
  from deepmatcher.data.field import MatchingField, FastText
  from deepmatcher.data.process import process, process_unlabeled
  from deepmatcher import MatchingModel
  from urllib.parse import urljoin
  from urllib.request import pathname2url
  from test import test_dir_path
label_desc: Use image node_id 2 for calling the ModelTrainSaveLoadTest obj's underlying member method code with example usage: obj.tearDown() without return types