public WebElement getClearButton() {
        WebElement button = showPanel().findElement(By.className("ui-datepicker-buttonbar")).findElement(By.className("ui-clear-button"));
        PrimeSelenium.waitGui().until(ExpectedConditions.elementToBeClickable(button));
        return button;
    }
Gets the Clear button on the overlay panel.

@return the Clear button
primefaces-selenium/primefaces-selenium-components/src/main/java/org/primefaces/selenium/component/DatePicker.java