@Override
    public void setValue(Serializable value) {
        if (value == null) {
            value = "\"\"";
        }

        PrimeSelenium.executeScript(getWidgetByIdScript() + ".setValue(" + value.toString() + ")");
    }
Gets the Spinner's Down button.

@return the {@link WebElement} representing the down button
primefaces-selenium/primefaces-selenium-components/src/main/java/org/primefaces/selenium/component/Spinner.java