code: def union(*args: "OrderedSet[T]") -> "OrderedSet[T]":
      ret = args[0].copy()
      for s in args[1:]:
          ret.update(s)
      return ret
  
imports: import contextlib
  import functools
  import hashlib
  import os
  import re
  import sys
  import textwrap
  from argparse import Namespace
  from dataclasses import fields, is_dataclass
  from enum import auto, Enum
  from typing import Any, Callable, Dict, Generic, Iterable, Iterator, List, Literal, NoReturn, Optional, Sequence, Set, Tuple, TypeVar, Union
  from typing_extensions import Self
  from torchgen.code_template import CodeTemplate
label_desc: Use image node_id 7 for calling the OrderedSet obj's underlying member method code with example usage: obj.union() and returns: ret