public Track add(Track track) {
synchronized (this) {
Track copy;
if ((copy = getTrack(track)) == null) {
copy = new Track((Element) doc.importNode(track.getElement(), false));
docElt.appendChild(copy.getElement());
tracks.add(copy);
hash.put(copy.getKey(), copy);
}
return copy;
}
}
public XML addChild(XML child) {
Document document = node.getOwnerDocument();
Node newChild = document.importNode((Node) child.getNative(), true);
return appendChild(newChild);
}