public void removeEmptyText(JwXmlElement e) {
for (JwXmlNode n : e.getChildren().getShallowCopy())
if (n.isText() && n.asText().isEmpty()) e.removeChild(n);
}
public void normalizeNode(JwXmlNode e) {
if (e.isDocument()) normalizeDocument(e.asDocument());
if (e.isElement()) normalizeElement(e.asElement());
if (e.isText()) normalizeText(e.asText());
}