@Override
public void onBlipDeleted(ObservableConversationBlip blip) {
if (capabilities.containsKey(EventType.WAVELET_BLIP_REMOVED)) {
String rootBlipId = ConversationUtil.getRootBlipId(conversation);
WaveletBlipRemovedEvent event = new WaveletBlipRemovedEvent(
null, null, deltaAuthor.getAddress(), deltaTimestamp, rootBlipId, blip.getId());
addEvent(event, capabilities, rootBlipId, messages);
}
}