code: def setUp(self):
      super().setUp()
      self.storage = DummyCacheStorage()
  
file_path: streamlit/lib/tests/streamlit/runtime/caching/storage/dummy_cache_storage_test.py
imports: import unittest
  from streamlit.runtime.caching.storage import CacheStorageContext, CacheStorageKeyNotFoundError
  from streamlit.runtime.caching.storage.dummy_cache_storage import DummyCacheStorage, MemoryCacheStorageManager
label_desc: Use image node_id 1 for calling the DummyCacheStorageTest obj's underlying member method code with example usage: obj.setUp() without return types