@Transactional
 @RequestMapping(
     value = "/proposalDevelopment",
     params = {"methodToCall=viewUserAttachedFormPDF"})
 public ModelAndView viewUserAttachedFormPDF(
     ProposalDevelopmentDocumentForm form,
     HttpServletResponse response,
     @RequestParam("selectedLine") String selectedLine)
     throws Exception {
   DevelopmentProposal developmentProposal = form.getDevelopmentProposal();
   List<S2sUserAttachedForm> s2sAttachedForms = developmentProposal.getS2sUserAttachedForms();
   S2sUserAttachedForm selectedForm = s2sAttachedForms.get(Integer.parseInt(selectedLine));
   S2sUserAttachedFormFileContract userAttachedFormFile =
       getUserAttachedFormService().findUserAttachedFormFile(selectedForm);
   if (userAttachedFormFile != null) {
     ControllerFileUtils.streamToResponse(
         userAttachedFormFile.getFormFile(),
         selectedForm.getFormFileName(),
         CONTENT_TYPE_PDF,
         response);
   } else {
     return getModelAndViewService().getModelAndView(form);
   }
   return null;
 }
  @Transactional
  @RequestMapping(
      value = "/proposalDevelopment",
      params = {"methodToCall=refresh", "refreshCaller=S2sOpportunity-LookupView"})
  public ModelAndView refresh(
      @ModelAttribute("KualiForm") ProposalDevelopmentDocumentForm form,
      BindingResult result,
      HttpServletRequest request,
      HttpServletResponse response)
      throws Exception {
    ProposalDevelopmentDocument document = form.getProposalDevelopmentDocument();
    DevelopmentProposal proposal = document.getDevelopmentProposal();
    if (form.getNewS2sOpportunity() != null
        && StringUtils.isNotEmpty(form.getNewS2sOpportunity().getOpportunityId())) {

      proposal.setS2sOpportunity(form.getNewS2sOpportunity());
      proposal.getS2sOpportunity().setDevelopmentProposal(proposal);

      // Set default S2S Submission Type
      if (StringUtils.isBlank(form.getNewS2sOpportunity().getS2sSubmissionTypeCode())) {
        String defaultS2sSubmissionTypeCode =
            getProposalTypeService().getDefaultSubmissionTypeCode(proposal.getProposalTypeCode());
        proposal.getS2sOpportunity().setS2sSubmissionTypeCode(defaultS2sSubmissionTypeCode);
        getDataObjectService()
            .wrap(proposal.getS2sOpportunity())
            .fetchRelationship("s2sSubmissionType");
      }

      final String opportunityTitle = form.getNewS2sOpportunity().getOpportunityTitle();
      String trimmedTitle =
          StringUtils.substring(
              opportunityTitle, 0, ProposalDevelopmentConstants.S2sConstants.OPP_TITLE_MAX_LENGTH);
      // Set Opportunity Title and Opportunity ID in the Sponsor & Program Information section
      proposal.setProgramAnnouncementTitle(trimmedTitle);
      proposal.setCfdaNumber(form.getNewS2sOpportunity().getCfdaNumber());
      proposal.setProgramAnnouncementNumber(form.getNewS2sOpportunity().getOpportunityId());
      form.setNewS2sOpportunity(new S2sOpportunity());
    }

    S2sOpportunity s2sOpportunity = proposal.getS2sOpportunity();

    try {
      if (s2sOpportunity != null && s2sOpportunity.getSchemaUrl() != null) {
        List<String> missingMandatoryForms =
            s2sSubmissionService.setMandatoryForms(proposal, s2sOpportunity);

        if (!CollectionUtils.isEmpty(missingMandatoryForms)) {
          globalVariableService
              .getMessageMap()
              .putError(
                  Constants.NO_FIELD,
                  KeyConstants.ERROR_IF_OPPORTUNITY_ID_IS_INVALID,
                  s2sOpportunity.getOpportunityId(),
                  StringUtils.join(missingMandatoryForms, ","));
          proposal.setS2sOpportunity(null);
        }
      }
    } catch (S2sCommunicationException ex) {
      if (ex.getErrorKey().equals(KeyConstants.ERROR_GRANTSGOV_NO_FORM_ELEMENT)) {
        ex.setMessage(s2sOpportunity.getOpportunityId());
      }
      globalVariableService
          .getMessageMap()
          .putError(Constants.NO_FIELD, ex.getErrorKey(), ex.getMessageWithParams());
      proposal.setS2sOpportunity(new S2sOpportunity());
    }
    super.save(form, result, request, response);
    return getRefreshControllerService().refresh(form);
  }