code: @RequestMapping(params = "action=delete")
      public ModelAndView getDeleteView(PortletRequest request) {
          Map<String, Object> model = new HashMap<String, Object>();
  
          // add a list of all permitted deletion types
          final Iterable<IPortalDataType> deletePortalDataTypes =
                  this.portalDataHandlerService.getDeletePortalDataTypes();
          final List<IPortalDataType> types =
                  getAllowedTypes(request, IPermission.DELETE_ACTIVITY, deletePortalDataTypes);
          model.put("supportedTypes", types);
  
          return new ModelAndView("/jsp/ImportExportPortlet/delete", model);
      }
docs: Display the entity deletion form view.
  
  @param request
  @return