class_docstr: A small serializable object to wrap literal values without copying
code: def __init__(self, data):
      self.data = data
  
imports: from __future__ import annotations
  from collections import defaultdict
  from collections.abc import Collection, Iterable, Mapping
  from typing import Any, Literal, TypeVar, cast, overload
  from dask.typing import Graph, Key, NoDefault, no_default
label_desc: Use image node_id 1 to create a new literal object  with example: obj = literal(data)