switch (fesenType) {
        case Constants.FESEN_TYPE_CLOUD:
        case Constants.FESEN_TYPE_AWS:
            if (logger.isDebugEnabled()) {
                logger.debug("Skipped configsync flush: {}", fesenType);
            }
            callback.run();
            break;
        default:
            ComponentUtil.getCurlHelper().post("/_configsync/flush").execute(response -> {

        if ( log.isTraceEnabled() ) {
            log.trace("Release session " + usage + " " + this);
        }

        if ( usage == 0 ) {
            if ( log.isDebugEnabled() ) {
                log.debug("Usage dropped to zero, release connection " + this.transport);
            }
            synchronized ( this ) {
                if ( this.transportAcquired.compareAndSet(true, false) ) {
                    this.transport.release();