getStats method
Returns a Iterable over all the non nullable CacheStore CacheStats keys requested of a named cache. It provides a optimized retrieval strategy that avoids reading the CacheEntry implementation into memory
name: The cache namekeys: The list of keys
Implementation
@override
Future<Iterable<CacheStat?>> getStats(String name, Iterable<String> keys) {
return Future.value(keys.map((key) => _cacheStore(name)[key]));
}