def __contains__(self, item):
index_key = get_cache_index_key(item)<EOL>cache_key = self.__cache_index_key_map.get(index_key)<EOL>target_cache = self.__caches[index_key[<NUM_LIT:0>]]<EOL>return cache_key in target_cache<EOL>
Check if resource is in cache, expects same 3-length tuple key as __getitem__