String filename2 = UUID.randomUUID().toString();
tdoc2.setName(filename2);
assertEquals(filename2, tdoc2.getName());
ObjectId id2 = tdoc2.save();
assertNotNull(id2);
// set new content and save
Document doc3 = (Document) this.session.getObject(id2, oc);
TransientDocument tdoc3 = doc3.getTransientDocument();