code: def is_fx_tracing() -> bool:
      return _is_fx_tracing_flag
  
file_path: torchrec/torchrec/fx/tracer.py
imports: from typing import Any, Callable, Dict, List, Optional, Union
  import torch
  from torch.fx._compatibility import compatibility
  from torch.fx.graph import Graph
  from torch.fx.node import Argument
  from torchrec.distributed.types import LazyAwaitable, NoWait
  from torchrec.fx.utils import dmp_fx_trace_forward
label_desc: Use image node_id 1 for calling a global function with example usage: is_fx_tracing() and returns: _is_fx_tracing_flag