public Windowed <K> PeekNextKey() => keyValueEnumerator.PeekNextKey();
public K PeekNextKey() { var k = innerEnumerator.PeekNextKey(); return(funcSerdesKey(k.Get)); }
public Windowed <K> PeekNextKey() => WindowedKey(innerEnumerator.PeekNextKey());
public Bytes PeekNextKey() => wrapped.PeekNextKey();
public long PeekNextKey() => WindowKeyHelper.ExtractStoreTimestamp(bytesEnumerator.PeekNextKey().Get);
public Bytes PeekNextKey() => currentEnumerator?.PeekNextKey();