Customer/EventListener/CustomerListener.php
public function onInsert(ResourceEventInterface $event)
    {
        $customer = $this->getCustomerFromEvent($event);

        $changed = $this->generateNumber($customer);

        $changed |= $this->updateFromParent($customer);

        $changed |= $this->pricingUpdater->updateVatNumberSubject($customer);

        if ($changed) {
            $this->persistenceHelper->persistAndRecompute($customer);
        }
    }
public function onInsert(ResourceEventInterface $event)
    {
        $customer = $this->getCustomerFromEvent($event);

        $changed = $this->generateNumber($customer);

        $changed |= $this->updateFromParent($customer);

        $changed |= $this->pricingUpdater->updateVatNumberSubject($customer);

        if ($changed) {
            $this->persistenceHelper->persistAndRecompute($customer);
        }
    }
Insert event handler.

@param ResourceEventInterface $event