code: def __enter__(self):
      return self
  
imports: from typing import Tuple, Dict, AsyncIterator, List
  import os
  import secrets
  from concurrent.futures import ThreadPoolExecutor
  import asyncio
  import functools
  import pytest
  from hailtop.utils import url_scheme, bounded_gather2
  from hailtop.aiotools import LocalAsyncFS, Transfer, FileAndDirectoryError, Copier, AsyncFS, FileListEntry
  from hailtop.aiotools.router_fs import RouterAsyncFS
  from hailtop.aiocloud.aiogoogle import GoogleStorageAsyncFS
  from hailtop.aiocloud.aioaws import S3AsyncFS
  from hailtop.aiocloud.aioazure import AzureAsyncFS
  from .generate_copy_test_specs import run_test_spec, create_test_file, create_test_dir
  from .copy_test_specs import COPY_TEST_SPECS
label_desc: Use image node_id 2 for calling the RaisesOrObjectStore obj's underlying member method code with example usage: obj.__enter__() and returns: self