code: def _load_config(
      self, config: Optional[Union[_PATH, Dict[str, Any]]]
  ) -> Optional[Dict[str, Any]]:
      if config is None and self.DEEPSPEED_ENV_VAR in os.environ:
          rank_zero_info(
              f"Loading DeepSpeed config from set {self.DEEPSPEED_ENV_VAR} environment variable"
          )
          config = os.environ[self.DEEPSPEED_ENV_VAR]
      if isinstance(config, (str, Path)):
          if not os.path.isfile(config):
              raise FileNotFoundError(
                  f"You passed in a path to a DeepSpeed config but the path does not exist: {config}"
              )
          with open(config) as f:
              config = json.load(f)
      assert isinstance(config, dict) or config is None
      return config
  
imports: import argparse
  import json
  import logging
  import os
  import platform
  from contextlib import ExitStack
  from itertools import chain
  from pathlib import Path
  from typing import TYPE_CHECKING, Any, Callable, ContextManager, Dict, List, Mapping, Optional, Tuple, Union
  import torch
  from lightning_utilities.core.imports import RequirementCache
  from torch.nn import Module
  from torch.optim import Optimizer
  from typing_extensions import override
  from lightning.fabric.accelerators import Accelerator, CUDAAccelerator
  from lightning.fabric.plugins.environments.cluster_environment import ClusterEnvironment
  from lightning.fabric.plugins.precision import Precision
  from lightning.fabric.strategies.ddp import DDPStrategy
  from lightning.fabric.strategies.registry import _StrategyRegistry
  from lightning.fabric.strategies.strategy import _Sharded
  from lightning.fabric.utilities.distributed import log
  from lightning.fabric.utilities.load import _move_state_into
  from lightning.fabric.utilities.rank_zero import rank_zero_info, rank_zero_warn
  from lightning.fabric.utilities.seed import reset_seed
  from lightning.fabric.utilities.types import _PATH
label_desc: Use image node_id 24 for calling the DeepSpeedStrategy obj's underlying member method code with example usage: obj._load_config(config) and returns: config