code: def setUp(self):
      self.plaintext_folder = join(test_folder, "sample_text_corpus")
      self.saved_plaintext_folder = join(
          test_folder, "sample_saved_text_corpus"
      )
  
file_path: underthesea/tests/corpus/test_plaintext.py
imports: import os
  import shutil
  from os import listdir
  from unittest import TestCase
  from os.path import join
  import sys
  from underthesea.corpus import PlainTextCorpus
label_desc: Use image node_id 1 for calling the TestPlainTextCorpus obj's underlying member method code with example usage: obj.setUp() without return types