**Describe the situation**

The author implemented it but enabled only for DiskS3.
CC @excitoon 
buffer.reserve(result_batch.size());
        for (const auto & row : result_batch)
        {
            String key = row.GetKey();
            if (re2::RE2::FullMatch(key, *matcher))
                buffer.emplace_back(std::move(key));
        }
        
        buffer_iter = buffer.begin();
        request.SetContinuationToken(outcome.GetResult().GetNextContinuationToken());
        
        is_finished = !outcome.GetResult().GetIsTruncated();
    }
    std::mutex mutex;
    Strings buffer;
    Strings::iterator buffer_iter;
    Aws::S3::S3Client client;
    S3::URI globbed_uri;
    Aws::S3::Model::ListObjectsV2Request request;
    Aws::S3::Model::ListObjectsV2Outcome outcome;
    std::unique_ptr<re2::RE2> matcher;
    bool is_finished{false};
};
StorageS3Source::DisclosedGlobIterator::DisclosedGlobIterator(Aws::S3::S3Client & client_, const S3::URI & globbed_uri_)
    : pimpl(std::make_shared<StorageS3Source::DisclosedGlobIterator::Impl>(client_, globbed_uri_)) {}
String StorageS3Source::DisclosedGlobIterator::next()
{
    return pimpl->next();
}
class StorageS3Source::KeysIterator::Impl