code: def test_import_empty_dir(
      self, tmp_dir, dvc, workspace, is_object_storage
  ):
      # prefix based storage services (e.g s3) doesn't have the real concept
      # of directories. So instead we create an empty file that ends with a
      # trailing slash in order to actually support this operation
      if is_object_storage:
          contents: Union[str, Dict[str, str]] = ""
      else:
          contents = {}
  
      workspace.gen({"empty_dir/": contents})
  
      dvc.imp_url("remote://workspace/empty_dir/")
  
      empty_dir = tmp_dir / "empty_dir"
      assert empty_dir.is_dir()
      assert tuple(empty_dir.iterdir()) == ()
  
imports: import os
  from typing import Dict, Union
  import pytest
  from funcy import first
  from dvc.exceptions import URLMissingError
  from dvc.repo import Repo
  from dvc.repo.ls_url import ls_url, parse_external_url
  from dvc.utils.fs import remove
label_desc: Use image node_id 6 for calling the TestImport obj's underlying member method code with example usage: obj.test_import_empty_dir(tmp_dir, dvc, workspace, is_object_storage) without return types