class_docstr: Translate dataset tests.
code: def setUpClass(cls):  # pylint:disable = invalid-name
      super().setUpClass()
      super(TranslateFolderTests, cls).setUpClass()
      cls.DATASET_CLASS.__init__ = new_init
      cls.DATASET_CLASS.download_and_prepare = mock.Mock(
          return_value=None
      )
  
file_path: datasets/tensorflow_datasets/core/folder_dataset/translate_folder_test.py
imports: import os
  from unittest import mock
  from tensorflow_datasets.core.folder_dataset import translate_folder
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling the TranslateFolderTests obj's underlying member method code with example usage: obj.setUpClass(cls) without return types