@Override
    public CompletableFuture<FetchResult> fetch(FetchContext context, long startOffset, long endOffset, int maxBytesHint) {
        return innerStream.fetch(context, startOffset, endOffset, maxBytesHint);
    }
Append a batch of meta key values without trims.

@return a future of append result
core/src/main/scala/kafka/log/streamaspect/MetaStream.java