WorksheetItem footerItem = (WorksheetItem) getFacet(FOOTER_FACET_NAME);
if (footerItem != null)
{
int colspan = getChildrenOfType(getChildren(), UIColumn.class).size();
excelWorkbook.addWorksheetFooter(footerItem, colspan);
}
}
@SuppressWarnings("unchecked")
public static Iterator unwrapIterator(Object value)