class_docstr: Add indexing features to `datasets.Dataset`
class_docstr_tok: ["Add","indexing","features","to","`","datasets.Dataset","`"]
code: def __init__(self):
      self._indexes: Dict[str, BaseIndex] = {}
  
imports: import importlib.util
  import os
  import tempfile
  from pathlib import PurePath
  from typing import TYPE_CHECKING, Dict, List, NamedTuple, Optional, Union
  import fsspec
  import numpy
  from .utils import logging
  from .utils import tqdm
label_desc: Use image node_id 1 to create a new IndexableMixin object  with example: obj = IndexableMixin()