AbstractPdfView+pdf stream download

If I have a bytestreem of pdf how can I download pdf using AbstractPdfView.

Without using AbstractPdfView(through normal Controller) I can do this by using

Code:

---

response.setHeader("Content-Disposition",
                                "attachment;filename=\"" + "Rahul.pdf" + "\"");
 response.setContentType("application/download");

---

Thanks:)