        setImmediate(() => {
            if (!this.pendingPublishRequestCount) {
                return;
            }
            const starving_subscription = this._find_starving_subscription();
            if (starving_subscription) {
                doDebug && debugLog(chalk.bgWhite.red("feeding most late subscription subscriptionId  = "), starving_subscription.id);
                starving_subscription.process_subscription();
            }
        });