code: public static void toFile(final HttpConfig config, final String contentType, final File file) {
          config.context(contentType, ID, file);
          config.getResponse().parser(contentType, Download::fileParser);
      }
docs: Downloads the content to a specified file with the specified content type.
  
  @param config the `HttpConfig` instance
  @param file the file where content will be downloaded
  @param contentType the content type