@RequestMapping(value = "/read/{oid}/downloadkeystore")
 public void processReadToDownloadKeystore(
     @PathVariable("oid") DomainKeyStore domainKeyStore, HttpServletResponse response) {
   InputStream is = domainKeyStore.getKeyStoreFile().getStream();
   response.setContentType("application/octet-stream");
   response.setHeader(
       "Content-disposition", "attachment; filename=" + domainKeyStore.getName() + ".jks");
   try {
     StreamUtils.copy(is, response.getOutputStream());
     response.flushBuffer();
   } catch (IOException e) {
     e.printStackTrace();
   }
 }