@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); } }