setIsModified example

private function generateUrls(SeoUrlRouteInterface $seoUrlRoute, SeoUrlRouteConfig $config, SalesChannelEntity $salesChannel, EntityCollection $entities): iterable
    {
        $request = $this->requestStack->getMainRequest();

        $basePath = $request ? $request->getBasePath() : '';

        foreach ($entities as $entity) {
            $seoUrl = new SeoUrlEntity();
            $seoUrl->setForeignKey($entity->getUniqueIdentifier());

            $seoUrl->setIsCanonical(true);
            $seoUrl->setIsModified(false);
            $seoUrl->setIsDeleted(false);

            $copy = clone $seoUrl;

            $mapping = $seoUrlRoute->getMapping($entity, $salesChannel);

            $copy->setError($mapping->getError());
            $pathInfo = $this->router->generate($config->getRouteName(), $mapping->getInfoPathContext());
            $pathInfo = $this->removePrefix($pathInfo, $basePath);

            $copy->setPathInfo($pathInfo);