namespaces:
for ( Splay s = c.nextSplay() ; s.isAttr() ; s = s.nextSplay() )
{
if (s.isXmlns())
{
Xmlns x = (Xmlns) s;
String prefix = x.getLocal();
String uri = x.getUri();
if (ensureDefaultEmpty &&
prefix.length() == 0 && uri.length() > 0)
{
continue;