Replace $form with either publish or web page determined by if you want the URL being included in the submit or site sitemap – respectively. You can find samples of fundamental Search engine optimization elements but what I am seeking is a bit more in-depth. It's possible, if an answer https://addons.prestashop.com/nl/seo-zoekmachineoptimalisatie-vermelding/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html