code: def _load_faircluster() -> None:
      if "FAIR_ENV_CLUSTER" not in os.environ:
          return
  
      asset_store.env_resolvers.append(lambda: "faircluster")
  
      # This directory is meant to store cluster-wide asset cards.
      asset_dir = Path("/checkpoint/balioglu/fairseq2-ext/cards")
      if asset_dir.exists():
          asset_store.metadata_providers.append(
              FileAssetMetadataProvider(asset_dir)
          )
  
imports: from __future__ import annotations
  import os
  from abc import ABC, abstractmethod
  from pathlib import Path
  from typing import Any, Dict, List, Optional, Protocol, final
  from fairseq2.assets.card import AssetCard, AssetCardError
  from fairseq2.assets.metadata_provider import AssetMetadataProvider, AssetNotFoundError, FileAssetMetadataProvider
  from fairseq2.assets.utils import _get_path_from_env
  from fairseq2.typing import finaloverride
label_desc: Use image node_id 4 for calling a global function with example usage: _load_faircluster() without return types