code: def f16(arg1, arg2, *, arg3=None, arg4=None):
      pass
  
imports: from inspect import Signature
  from numbers import Integral
  from typing import Any, Callable, Dict, List, Optional, Tuple, TypeVar, Union
label_desc: Use image node_id 17 for calling a global function with example usage: f16(arg1, arg2) without return types