code: def dump_cfg(cfg: DictConfig) -> None:
      remove_unused_components(cfg)
      # dump the exp config to the exp dir
      os.makedirs(cfg.exp_dir, exist_ok=True)
      try:
          cfg_filename = os.path.join(cfg.exp_dir, "expconfig.yaml")
          OmegaConf.save(config=cfg, f=cfg_filename)
      except PermissionError:
          warnings.warn(
              "Can't dump config due to insufficient permissions!"
          )
  
imports: import logging
  import os
  import warnings
  from dataclasses import field
  import hydra
  import torch
  from accelerate import Accelerator
  from omegaconf import DictConfig, OmegaConf
  from packaging import version
  from pytorch3d.implicitron.dataset.data_source import DataSourceBase, ImplicitronDataSource
  from pytorch3d.implicitron.models.base_model import ImplicitronModelBase
  from pytorch3d.implicitron.models.renderer.multipass_ea import MultiPassEmissionAbsorptionRenderer
  from pytorch3d.implicitron.models.renderer.ray_sampler import AdaptiveRaySampler
  from pytorch3d.implicitron.tools.config import Configurable, expand_args_fields, remove_unused_components, run_auto_creation
  from .impl.model_factory import ModelFactoryBase
  from .impl.optimizer_factory import OptimizerFactoryBase
  from .impl.training_loop import TrainingLoopBase
  from .impl.utils import seed_all_random_engines
label_desc: Use image node_id 2 for calling a global function with example usage: dump_cfg(cfg) without return types