code: def __repr__(self) -> str:
      return "Unspecified"
  
file_path: bokeh/src/bokeh/util/dataclasses.py
imports: from __future__ import annotations
  import logging
  from dataclasses import dataclass, field, fields
  from typing import TYPE_CHECKING, Any, Iterable, TypeVar, Union
label_desc: Use image node_id 1 for calling the _UnspecifiedType obj's underlying member method code with example usage: obj.__repr__() and returns: str