@Override
public XQExpression visit(ExtensionExpr expr, XQueryContext ctxt) throws XQueryException {
final List pragmas = expr.getPragmas();
for(int i = 0; i < pragmas.size(); i++) {
Pragma p = (Pragma) pragmas.get(i);
buf.append(p.toString());
}
final XQExpression e = expr.getExpr();
if(e != null) {
indentln();