MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException {
try {
t.setFeedType(FEED_TYPE);
WireFeedOutput wireFeedOutput = new WireFeedOutput();
Document feedDoc = wireFeedOutput.outputJDom(t);
XMLOutputter outputter = new XMLOutputter();
outputter.setFormat(Format.getPrettyFormat());
outputter.output(feedDoc, entityStream);
} catch ( FeedException cause) {