code: def _resolve_default(val):
      if not isinstance(val, Field):
          return val
      if val.default != MISSING:
          return val.default
      if val.default_factory != MISSING:
          return val.default_factory()
      raise ValueError("No default value")
  
file_path: ReAgent/reagent/core/configuration.py
imports: import functools
  from dataclasses import Field, fields, MISSING
  from inspect import isclass, Parameter, signature
  from typing import List, Optional, Type, Union
  from reagent.core.dataclasses import dataclass
  from torch import nn
label_desc: Use image node_id 3 for calling a global function with example usage: _resolve_default(val) and returns: val, val, val