function RawTextHelpFormatter(options) {
  RawDescriptionHelpFormatter.call(this, options);
}
new RawTextHelpFormatter(options)
new ArgumentParser({formatterClass: argparse.RawTextHelpFormatter, ...})

Help message formatter which retains formatting of all help text.

Only the name of this class is considered a public API. All the methods
provided by the class are considered an implementation detail.