Element container = (Element) getElement().getLastChild()
.getFirstChild();
if (rowUidl.hasAttribute("icon")) {
// icons are in first content cell in TreeTable
ImageElement icon = Document.get().createImageElement();
icon.setClassName("v-icon");
icon.setAlt("icon");
icon.setSrc(client.translateVaadinUri(rowUidl
.getStringAttribute("icon")));
container.insertFirst(icon);
}
String classname = "v-treetable-treespacer";