code: def _validate_checkpoint_directory(path: _PATH) -> None:
      """Validates that the path points to a DeepSpeed checkpoint directory and suggests fixes for user error."""
      # Example DeepSpeed checkpoint directory:
      #
      # epoch=5-step=10999.ckpt
      # ├── checkpoint
      # │   ├── zero_pp_rank_0_mp_rank_00_model_states.pt
      # │   ├── zero_pp_rank_0_mp_rank_00_optim_states.pt
      # │   ├── zero_pp_rank_1_mp_rank_00_model_states.pt
      # │   └── zero_pp_rank_1_mp_rank_00_optim_states.pt
      # ├── latest
      # └── zero_to_fp32.py
  
      path = Path(path)
      path_is_ds_checkpoint = _is_deepspeed_checkpoint(path)
      default_message = f"The provided path is not a valid DeepSpeed checkpoint: {path}"
  
      if not path_is_ds_checkpoint:
          # Case 1: User may have accidentally passed the subfolder "checkpoint"
          parent_is_ds_checkpoint = _is_deepspeed_checkpoint(
              path.parent
          )
          if parent_is_ds_checkpoint:
              raise FileNotFoundError(
                  f"{default_message}. It looks like you passed the path to a subfolder."
                  f" Try to load using this parent directory instead: {path.parent}"
              )
          # Case 2: User may have accidentally passed the path to a file inside the "checkpoint" subfolder
          parent_parent_is_ds_checkpoint = (
              path.is_file()
              and _is_deepspeed_checkpoint(path.parent.parent)
          )
          if parent_parent_is_ds_checkpoint:
              raise FileNotFoundError(
                  f"{default_message}. It looks like you passed the path to a file inside a DeepSpeed checkpoint folder."
                  f" Try to load using this parent directory instead: {path.parent.parent}"
              )
          raise FileNotFoundError(default_message)
  
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 5 for calling a global function with example usage: _validate_checkpoint_directory(path) without return types