code: def hydra_main(overrides: List[Any]):
      cfg = compose_hydra_configuration(overrides)
      args, config = convert_to_attrdict(cfg)
      main(args, config)
  
imports: import logging
  import os
  import sys
  from argparse import Namespace
  from typing import Any, List, Optional
  import numpy
  import torch
  from iopath.common.file_io import g_pathmgr
  from vissl.config import AttrDict
  from vissl.data import build_dataset
  from vissl.hooks import default_hook_generator
  from vissl.utils.checkpoint import get_checkpoint_folder
  from vissl.utils.distributed_launcher import launch_distributed
  from vissl.utils.env import set_env_vars, setup_path_manager
  from vissl.utils.extract_features_utils import ExtractedFeaturesLoader
  from vissl.utils.hydra_config import compose_hydra_configuration, convert_to_attrdict
  from vissl.utils.io import save_file
  from vissl.utils.logger import setup_logging, shutdown_logging
  from vissl.utils.misc import is_faiss_available, set_seeds
  from vissl.utils.pca import PCA
label_desc: Use image node_id 6 for calling a global function with example usage: hydra_main(overrides) without return types