class_docstr: A descriptor to make special properties that become normal attributes.
  
  This is meant to be used mostly by the auto_attr decorator in this module.
code: def __get__(
      self, obj: InstanceT, objtype: type[InstanceT] | None = None
  ) -> T:
      ...
  
file_path: nibabel/nibabel/onetime.py
imports: from __future__ import annotations
  import typing
  from nibabel.deprecated import deprecate_with_version
label_desc: Use image node_id 3 for calling the OneTimeProperty obj's underlying member method code with example usage: obj.__get__(obj, objtype) without return types