docs: public static void write(HttpServletResponse response, File file) {
  		final String fileName = file.getName();
  		final String contentType = ObjectUtil.defaultIfNull(FileUtil.getMimeType(fileName), "application/octet-stream");
  		BufferedInputStream in = null;
  		try {
  			in = FileUtil.getInputStream(file);
  			write(response, in, contentType, fileName);
  		} finally {
  			IoUtil.close(in);
  		}
  	}