class_docstr: Test class for fifth set of voting learner experiment tests.
code: def setUpClass(cls):
      for dir_path in [train_dir, test_dir, output_dir]:
          dir_path.mkdir(exist_ok=True)
  
      # create the training and test data files that we will use
      create_jsonlines_feature_files(train_dir)
      create_jsonlines_feature_files(test_dir)
  
file_path: skll/tests/test_voting_learners_expts_5.py
imports: import unittest
  from itertools import product
  from pathlib import Path
  from unittest.mock import DEFAULT, patch
  from skll.data import FeatureSet
  from skll.experiments import run_configuration
  from skll.learner.voting import VotingLearner
  from skll.utils.testing import BoolDict, config_dir, create_jsonlines_feature_files, fill_in_config_options_for_voting_learners, output_dir, remove_jsonlines_feature_files, test_dir, train_dir
label_desc: Use image node_id 1 for calling the TestVotingLearnersExptsFive obj's underlying member method code with example usage: obj.setUpClass(cls) without return types