code: @Deprecated
  	protected Map<String, Helper> helpers() {
  		Map<String, Helper> helpers = new HashMap<>();
  		helpers.put(HandlebarsJsonPathHelper.NAME, new HandlebarsJsonPathHelper());
  		helpers.put(HandlebarsEscapeHelper.NAME, new HandlebarsEscapeHelper());
  		return helpers;
  	}
docs: Override this if you want to register your own helpers.
  @deprecated - please use the {@link WireMockExtensions} mechanism and pass the
  helpers in your implementation
  @return a mapping of helper names to its implementations