code: def _register_builtin(fn, op):
      _get_builtin_table()[id(fn)] = op
  
file_path: pytorch/torch/jit/_builtins.py
imports: import cmath
  import math
  import warnings
  from collections import OrderedDict
  from typing import Dict, Optional
  import torch
  import torch.backends.cudnn
  from ..nn.modules.utils import _list_with_default, _pair, _quadruple, _single, _triple
label_desc: Use image node_id 4 for calling a global function with example usage: _register_builtin(fn, op) without return types