@RequestMapping(value = "/room-event-creative-material-list/{roomEventId}", method = RequestMethod.GET)
    @ResponseBody
    public CreativeMaterialListResponse allRoomEventCreativeMaterialList(
            @PathVariable(value = "roomEventId") final String roomEventIdStr
    ) {
        Boolean success = true;
        String errorMessage = null;
        List<CreativeMaterial> creativeMaterialList = null;

        Long roomEventId = null;
        try {
            roomEventId = controllerUtils.convertStringToLong(roomEventIdStr, true);
            creativeMaterialList = creativeMaterialPresenter.findAllCreativeMaterialsByRoomEventId(roomEventId);
        } catch (UrlParameterException e) {
            success = false;
            errorMessage = "Room event ID is wrong or empty";
        }

        return new CreativeMaterialListResponse(success, errorMessage, creativeMaterialList);
    }