public Body getScrollableBody() {
        List<Row> rows = new ArrayList<>();
        List<WebElement> scrollableBodyRows = getScrollableBodyWebElement().findElements(By.tagName("tr"));

        scrollableBodyRows.forEach(row -> {
            List<WebElement> rowCellsTmp = row.findElements(By.tagName("td"));
            List<Cell> rowCells = rowCellsTmp.stream()
                    .map(Cell::new)
                    .collect(Collectors.toList());
            rows.add(new Row(row, rowCells));
        });

        return new Body(getScrollableBodyWebElement(), rows);
    }
Gets the Select All checkbox in the header of the table.

@return the WebElement representing the checkbox
primefaces-selenium/primefaces-selenium-components/src/main/java/org/primefaces/selenium/component/base/AbstractTable.java