code: def test_create_delete_folder(self):
      folder_name = "/test_folder1"
      self.assertTrue(self.__disk_client.create_folder(folder_name))
      self.assertTrue(self.__disk_client.directory_exist(folder_name))
  
      content = self.__disk_client.folder_content(folder_name)
      self.assertEqual(len(content), 0)
  
      self.assertTrue(self.__disk_client.delete(folder_name))
      self.assertFalse(self.__disk_client.directory_exist(folder_name))
  
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 4 for calling the cloud_unit_test obj's underlying member method code with example usage: obj.test_create_delete_folder() without return types