code: public void onCountryCodeSelected(String country, String dialCode) {
          if (passwordlessRequestCodeLayout != null) {
              passwordlessRequestCodeLayout.onCountryCodeSelected(country, dialCode);
          }
      }
docs: Notifies the form that a new country code was selected by the user.
  
  @param country  the selected country iso code (2 chars).
  @param dialCode the dial code for this country