ProductCrossSellingsLoadedEvent example

foreach ($crossSellings as $crossSelling) {
            $clone = clone $criteria;
            if ($this->useProductStream($crossSelling)) {
                $element = $this->loadByStream($crossSelling, $context, $clone);
            } else {
                $element = $this->loadByIds($crossSelling, $context, $clone);
            }

            $elements->add($element);
        }

        $this->eventDispatcher->dispatch(new ProductCrossSellingsLoadedEvent($elements, $context));

        return new ProductCrossSellingRouteResponse($elements);
    }

    private function loadCrossSellings(string $productId, SalesChannelContext $context): ProductCrossSellingCollection
    {
        $criteria = new Criteria();
        $criteria->setTitle('product-cross-selling-route');
        $criteria
            ->addAssociation('assignedProducts')
            ->addFilter(new EqualsFilter('product.id', $productId))