return new Builder();
}
/** Creates a per-conversation registries bundle. */
private ConversationRegistries extendFor(Conversation c) {
Registries r = registries.createExtension();
for (ConversationInstaller ci : cis) {
ci.install(((WaveletBasedConversation) c).getWavelet(), c, r);
}
return new ConversationRegistries(r, ((WaveletBasedConversation) c).getWavelet(), c);
}