private void setRowSpans(List<Node> parentCells, Element childTable) {
List<Node> childRows = childTable.find("tbody").getChildren();
String rowSpan = childRows.size() > 1 ? String.valueOf(childRows.size()) : null;
for (Node parentCellNode : parentCells) {
Element parentCell = (Element) parentCellNode;
parentCell.attribute("rowspan", rowSpan);
}
}
/**
* Find the table tag rendered by a tapestry grid