code: def cache(self) -> Storage:
      return self.storages[CACHE]
  
file_path: ludwig/ludwig/backend/utils/storage.py
imports: import contextlib
  from typing import Any, Dict, Optional, Union
  from ludwig.utils import data_utils
label_desc: Use image node_id 5 for calling the StorageManager obj's underlying member method code with example usage: obj.cache() and returns: self