code: def is_marker_node(node: torch.fx.Node, marker_name: str) -> bool:
      # bool() syntax for pyre
      return bool(
          node.op == "call_function"
          and node.target == _fx_marker
          and isinstance(node.args[0], str)
          and node.args[0] == marker_name
      )
  
file_path: torchrec/torchrec/fx/utils.py
imports: import inspect
  from typing import Any, Dict, List, Set
  import torch
  from torch.fx._symbolic_trace import is_fx_tracing
label_desc: Use image node_id 5 for calling a global function with example usage: is_marker_node(node, marker_name) and returns: bool