code: def test_remove_directory(self):
      self.hffs.rm(self.hf_path + "/data", recursive=True)
      self.assertNotIn(
          self.hf_path + "/data", self.hffs.ls(self.hf_path)
      )
      self.hffs.rm(
          self.hf_path + "@refs/pr/1" + "/data", recursive=True
      )
      self.assertNotIn(
          self.hf_path + "@refs/pr/1" + "/data",
          self.hffs.ls(self.hf_path),
      )
  
imports: import datetime
  import unittest
  from typing import Optional
  from unittest.mock import patch
  import fsspec
  import pytest
  from huggingface_hub.hf_file_system import HfFileSystem
  from huggingface_hub.utils import RepositoryNotFoundError, RevisionNotFoundError
  from .testing_constants import ENDPOINT_STAGING, TOKEN
  from .testing_utils import repo_name
label_desc: Use image node_id 8 for calling the HfFileSystemTests obj's underlying member method code with example usage: obj.test_remove_directory() without return types