code: private void loadMimeType(URL url) {
      try {
        Stopwatch watch = new Stopwatch(true);
        InputStream im = url.openStream();
        contentTypes.load(im);
        logger.info("Load {} content types in {}", contentTypes.size(), watch);
        im.close();
      } catch (IOException e) {
        logger.error("load " + url + " error", e);
      }
    }
docs: META-INF/mimetypes.properties
  
  @param url