class_docstr: Utils to query split/scenes info.
class_docstr_tok: ["Utils","to","query","split\/scenes","info","."]
docstr: Returns the flatten list of all scene configs.
docstr_tok: ["Returns","the","flatten","list","of","all","scene","configs","."]
code: def _all_scene_configs(self) -> list[SceneConfig]:
      """Returns the flatten list of all scene configs."""
      return list(
          itertools.chain(*self.split_to_scene_configs.values())
      )
  
imports: from __future__ import annotations
  import abc
  import collections
  import dataclasses
  import itertools
  import tempfile
  from typing import Any, Dict, Iterator, List, Optional, TypeVar, Union
  import apache_beam
  from etils import edc
  from etils import epath
  import kubric
  import tensorflow_datasets
label_desc: Use image node_id 4 for calling the SplitScenesMapping obj's underlying member method code with example usage: obj._all_scene_configs() and returns: list