/**
* Return the text content of the first matched tag. Short cut for "xml.child(tag).text()"
*
* <p>Return null if there's no matched tag.
*
* @param tag tag name
* @return text
* @see testText2
*/
public String text(String tag) {
XmlDom dom = child(tag);
if (dom == null) return null;
return dom.text();
}
