code: public static final KeyPressHandler getPhoneNumberKeyPressHandler() { // NOPMD it's thread save!
      if (HandlerFactory.phoneNumberKeyPressHandler == null) {
        synchronized (PhoneNumberKeyPressHandler.class) {
          if (HandlerFactory.phoneNumberKeyPressHandler == null) {
            HandlerFactory.phoneNumberKeyPressHandler = new PhoneNumberKeyPressHandler();
          }
        }
      }
      return HandlerFactory.phoneNumberKeyPressHandler;
    }
docs: get a phone number key press handler.
  
  @return PhoneNumberKeyPressHandler