RequestManagementWorkflow_part2.php

<?php

...

    public function handle()
    {
        ...

        // wait for at most 3 providers quotation, 3 days maximum
        $event = (new Wait(ProvidersQuotationGatheredEvent::class))->days(3)->execute();

        ...
    }

    public function onEvent($event)
    {
        if ($event instanceof ProviderQuotationEvent) {
            // tell provider it's too late, if we already have enough quotations
            if (count($this->quotations) >= self::ENOUGH_PROVIDERS) {
                (new NotifyProviderItsTooLate($event->provider, $event->quotation))->execute();

                return;
            }
            // update or add provider quotation in quotations array
            $this->quotation[$event->provider->id] = $event->quotation;

            // if enough quotation, continue the main flow
            if (count($this->quotations) >= self::ENOUGH_PROVIDERS) {
                // send an event to itself
                self::whereId($this->getId())->send(new ProvidersQuotationGatheredEvent());
            }
        }
    }
...