throws URIReferenceException {
String uri = uriReference.getURI();
if (uri.equals("http://www.w3.org/TR/xml-stylesheet")) {
try {
FileInputStream fis = new FileInputStream(f);
return new OctetStreamData(
fis, uriReference.getURI(), uriReference.getType());
} catch (Exception e) { throw new URIReferenceException(e); }
}
// fallback on builtin deref