code: def clear_all(self) -> None:
      raise NotImplementedError
  
file_path: streamlit/lib/streamlit/runtime/caching/storage/dummy_cache_storage.py
imports: from __future__ import annotations
  from streamlit.runtime.caching.storage.cache_storage_protocol import CacheStorage, CacheStorageContext, CacheStorageKeyNotFoundError, CacheStorageManager
  from streamlit.runtime.caching.storage.in_memory_cache_storage_wrapper import InMemoryCacheStorageWrapper
label_desc: Use image node_id 2 for calling the MemoryCacheStorageManager obj's underlying member method code with example usage: obj.clear_all() without return types