*/
public WaveletBasedConversation getConversation(WaveletId id) {
if (!IdUtil.isConversationalId(id)) {
Preconditions.illegalArgument("Wavelet id " + id + " is not conversational");
}
ObservableWavelet wavelet = waveView.getWavelet(id);
if (wavelet != null) {
return conversations.get(wavelet);
}
return null;
}