public Mono<PayStream> chargeCard(PayStream stream) {
  log.info(LoggingMarkers.instance().bookmark(Bookmarks.CHARGE_CARD_START)...);
  paymentConnector.chargeCard(getChargePaymentRequest(stream))
    .doOnSuccess(this::logChargeCardSuccess)
    .doOnError(this::logChargeCardError);
}

private void logChargeCardSuccess(ChargeCardResponse response) {
  log.info(LoggingMarkers.instance().bookmark(Bookmarks.CHARGE_CARD_SUCCESS)...);
}

private void logChargeCardError(Throwable th) {
  log.error(LoggingMarkers.instance().bookmark(Bookmarks.CHARGE_CARD_ERROR)...);
}