code: def __enter__(self) -> "SCMContext":
      self._cm = self()
      return self._cm.__enter__()
  
file_path: dvc/dvc/repo/scm_context.py
imports: import logging
  import shlex
  from contextlib import contextmanager
  from functools import wraps
  from typing import TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Optional, Set, Union
  from dvc.log import logger
  from dvc.utils import relpath
  from dvc.utils.collections import ensure_list
label_desc: Use image node_id 9 for calling the SCMContext obj's underlying member method code with example usage: obj.__enter__() and returns: self