public void BufferingWriter()
        {
            using var writer = new FileBufferingWriter(memoryThreshold: MemoryThreshold, asyncIO: false);
            foreach (var chunk in GetChunks())
            {
                writer.Write(chunk.Span);
            }
            writer.Flush();

            using var ms = new MemoryStream(content.Length);
            writer.CopyTo(ms);
        }