code: public static final KeyPressHandler getPercentKeyPressHandler() { // NOPMD it's thread save!
      if (HandlerFactory.percentKeyPressHandler == null) {
        synchronized (PercentKeyPressHandler.class) {
          if (HandlerFactory.percentKeyPressHandler == null) {
            HandlerFactory.percentKeyPressHandler = new PercentKeyPressHandler();
          }
        }
      }
      return HandlerFactory.percentKeyPressHandler;
    }
docs: get a percent key press handler.
  
  @return PercentKeyPressHandler