(XContentIdentifierFactory)UnoRuntime.queryInterface(
XContentIdentifierFactory.class, xMSF.createInstance(
"com.sun.star.ucb.UniversalContentBroker"));
// create a content identifier from the ucb for tdoc
XContentIdentifier xContentIdentifier =
xContentIdentifierFactory.createContentIdentifier("vnd.sun.star.tdoc:/");
// get content
xContent = xContentProvider.queryContent(xContentIdentifier);
String content = xContent.getContentType();
log.println("#### Content root: " + content);