code: def register(cls, subclass):
      raise ValueError
  
file_path: equinox/equinox/_better_abstract.py
imports: import abc
  import dataclasses
  from typing import Annotated, ClassVar, Generic, get_args, get_origin, TYPE_CHECKING, TypeVar
  from typing_extensions import dataclass_transform, TypeAlias
label_desc: Use image node_id 1 for calling the ABCMeta obj's underlying member method code with example usage: obj.register(cls, subclass) without return types