private void saveConfirmedConsents(@NotNull Collection<ConfirmedConsent> updates) {
    if (!updates.isEmpty()) {
      try {
        final Map<String, ConfirmedConsent> allConfirmed = loadConfirmedConsents();
        final long stamp = System.currentTimeMillis();
        for (ConfirmedConsent consent : updates) {
          consent.setAcceptanceTime(stamp);
          allConfirmed.put(consent.getId(), consent);
        }
        myBackend.writeConfirmedConsents(confirmedConsentToExternalString(allConfirmed.values().stream()));
      }
      catch (IOException e) {
        LOG.info(e);
      }
    }
  }
private void saveConfirmedConsents(@NotNull Collection<ConfirmedConsent> updates)