docs: void notifyOmemoMucMessageReceived(MultiUserChat muc,
                                         Stanza stanza,
                                         OmemoMessage.Received decryptedMessage) {
          for (OmemoMucMessageListener l : omemoMucMessageListeners) {
              l.onOmemoMucMessageReceived(muc, stanza, decryptedMessage);
          }
      }