namespace Polly.Caching { internal static class CacheEngine { } } namespace Polly.Caching { public class SerializingCacheProvider<[System.Runtime.CompilerServices.Nullable(2)] TResult, [System.Runtime.CompilerServices.Nullable(2)] TSerialized> : ISyncCacheProvider<TResult> { public SerializingCacheProvider(ISyncCacheProvider<TSerialized> wrappedCacheProvider, ICacheItemSerializer<TResult, TSerialized> serializer); public (bool, TResult) TryGet(string key); public void Put(string key, TResult value, Ttl ttl); } }