List<ACR> acrValues = new ArrayList<>();
acrValues.add(new ACR("1"));
acrValues.add(new ACR("2"));
AuthenticationRequest authRequest = new AuthenticationRequest.Builder(
new ResponseType("code"),
new Scope("openid", "profile"),
new ClientID("123"),
new URI("https://example.com/in")).
acrValues(acrValues).
build();