public WebElement getColumnFilter() {
        if (getWebElement() != null) {
            return getWebElement().findElement(By.className("ui-column-filter"));
        }

        return null;
    }
Gets the filter element if it exists for this column.

@return the WebElement representing the filter
primefaces-selenium/primefaces-selenium-components/src/main/java/org/primefaces/selenium/component/model/datatable/HeaderCell.java