code: def __init__(self) -> None:
      self.exec_info: Optional[_ExecutionInfo] = None
  
file_path: pytorch/torch/distributed/fsdp/_trace_utils.py
imports: import functools
  from contextlib import contextmanager
  from dataclasses import dataclass, field
  from typing import Any, Callable, Dict, List, NamedTuple, Optional, Set, Tuple
  import torch
  import torch.nn
label_desc: Use image node_id 1 to create a new _ExecOrderTracer object  with example: obj = _ExecOrderTracer()