@RequestMapping(value = "/aboutunion/{year}/{name}")
    public void getDocument(@PathVariable String name,
                            @PathVariable String year,
                            ServletResponse response) {
        File image = storageService.getDocumentByNameAndLanguage(year, name);
        try {
            InputStream inputStream = new FileInputStream(image);
            IOUtils.copy(inputStream, response.getOutputStream());
            response.flushBuffer();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }