code: def test_get_content_folder(self):
      self.assertIsNotNone(self.__disk_client.folder_content("/"))
  
file_path: pyclustering/ci/cloud/tests/test_cloud.py
imports: import os
  import unittest
  from cloud.task import task
  from cloud.task_handler import task_handler
  from cloud.yandex_disk import yandex_disk
label_desc: Use image node_id 3 for calling the cloud_unit_test obj's underlying member method code with example usage: obj.test_get_content_folder() without return types