class_docstr: Base Data set class.
class_docstr_tok: ["Base","Data","set","class","."]
docstr: Dataset operations after download.
docstr_tok: ["Dataset","operations","after","download","."]
code: def after_download(self) -> bool:
      """Dataset operations after download."""
      raise NotImplementedError
  
file_path: delta/delta/data/datasets/base_dataset.py
imports: import os
  from typing import List
  from absl import logging
  from delta import PACKAGE_ROOT_DIR
  from delta.utils.config import load_config
  from delta.utils.config import save_config
label_desc: Use image node_id 3 for calling the BaseDataSet obj's underlying member method code with example usage: obj.after_download() without return types