ConversationBlip b1 = c.getRootThread().appendBlip();
ConversationBlip b2 = c.getRootThread().appendBlip();
write(b1, "First blip");
write(b2, "Second blip");
ConversationThread b1t1 = b1.addReplyThread(5);
write(b1t1.appendBlip(), "First reply");
ConversationThread b1t2 = b1.addReplyThread();
write(b1t2.appendBlip(), "Second reply");
return wave;
}