@RequestMapping(value = "/removeDocumentContentType", method = RequestMethod.GET)
 public @ResponseBody void removeDocumentContentType(
     @RequestParam(value = "nID") Long nID, HttpServletResponse response) {
   try {
     documentContentTypeDao.removeDocumentContentType(nID);
   } catch (RuntimeException e) {
     response.setStatus(403);
     response.setHeader("Reason", e.getMessage());
   }
 }
 @RequestMapping(value = "/setDocumentContentType", method = RequestMethod.GET)
 public @ResponseBody ResponseEntity<DocumentContentType> setDocumentContentType(
     @RequestParam(value = "nID") Long nID, @RequestParam(value = "sName") String sName) {
   ResponseEntity<DocumentContentType> result;
   try {
     DocumentContentType documentType = documentContentTypeDao.setDocumentContentType(nID, sName);
     result = JsonRestUtils.toJsonResponse(documentType);
   } catch (RuntimeException e) {
     result = toJsonErrorResponse(403, e.getMessage());
   }
   return result;
 }