ServiceStack支持二进制响应吗？

ServiceStack服务中是否有任何机制可以返回流/大型二进制数据？ WCF 的 MTOM 支持虽然笨拙，但可以有效地返回大量数据，而无需文本转换开销。

我喜欢服务堆栈，这个小代码足以从内存流返回 Excel 报告

public class ExcelFileResult : IHasOptions, IStreamWriter
{
    private readonly Stream _responseStream;
    public IDictionary<string, string> Options { get; private set; }

    public ExcelFileResult(Stream responseStream)
    {
        _responseStream = responseStream;

        Options = new Dictionary<string, string> {
             {"Content-Type", "application/octet-stream"},
             {"Content-Disposition", "attachment; filename=\"report.xls\";"}
         };
    }

    public void WriteTo(Stream responseStream)
    {
        if (_responseStream == null) 
            return;

        _responseStream.WriteTo(responseStream);
        responseStream.Flush();
    }
}