code: def __exit__(self, exc_type, exc_val, exc_tb):
      if self._cancel_on_error:
          self.shutdown(wait=True, cancel_futures=exc_val is not None)
      else:
          self.shutdown(wait=True)
      return False
  
file_path: dvc/dvc/utils/threadpool.py
imports: import queue
  import sys
  from concurrent import futures
  from itertools import islice
  from typing import Any, Callable, Iterable, Iterator, Optional, Set, TypeVar
label_desc: Use image node_id 5 for calling the ThreadPoolExecutor obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_val, exc_tb) and returns: False