XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

How about avoiding verification on copy in Text? It is unnecessary 
since the text has already been verified before.
It's straightforward:

public Node copy() {
   if (isCDATASection()) {
       return new CDATASection(this);
   }
   else {
         return build(data);
//       return new Text(this);
   }
}