docs: public void writeNotificationArea(OutputStream out, NotificationArea value) throws IOException {
          writeStartObject(out);
          writeStringField(out, OM_REGISTRATIONS, value.registrationsURL);
          writeStringField(out, OM_SERVERREGISTRATIONS, value.serverRegistrationsURL);
          writeStringField(out, OM_INBOX, value.inboxURL);
          writeStringField(out, OM_CLIENT, value.clientURL);
          writeEndObject(out);
      }