Need a FM to use it correctly, absence of clear instructions

[giby]

Hello there,

I try to use your extension, in vain. I see in the code there is: protected static function processParams($params, $parser=null){ global $wgGoogleSiteVerificationKey, $wgFacebookAdmins, $wgFacebookAppID;
So I guess I can find a facebook metadata support…
I would like as final code obtain:
<script type="application/ld+json"> { "@context": "http://schema.org", "@type": "Organization", "url": "http://www.histoire-valenciennes-cahv.fr/", "logo": "http://www.histoire-valenciennes-cahv.fr/Memoires/public/journals/1/pageHeaderLogoImage_fr_CA.jpg", "email": "info@histoire-valenciennes-cahv.fr", "legalName": "Cercle Archéologique et Historique de Valenciennes et de son arrondissement", "sameAs": "https://www.facebook.com/CAHValenciennes/" } </script>

How to proceed?
I would also add:
<script type="application/ld+json"> { "@context": "http://schema.org", "@type": "WebSite", "name": "Cercle Archéologique et Historique de Valenciennes et de son arrondissement", "alternateName": "CAHV", "url": "http://www.histoire-valenciennes-cahv.fr" } </script>
And more complexe:
<script type="application/ld+json"> { "@context":"http://schema.org", "@type":"ItemList", "itemListElement":[ { "@type":"ListItem", "position":1, "url":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/60" }, { "@type":"ListItem", "position":2, "url":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/59" }, { "@type":"ListItem", "position":3, "url":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/58" }, { "@type":"ListItem", "position":4, "url":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/71" }, { "@type":"ListItem", "position":5, "url":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/72" } ] } </script>
On some pages I'd like to obtain:
<script type="application/ld+json"> { "@context":"http://schema.org", "@type":"Book", "image": "http://www.histoire-valenciennes-cahv.fr/Memoires/public/journals/1/cover_issue_60_fr_CA.jpg", "name" : "Cercle Archéologique et Historique de Valenciennes - Mémoires - Tome XIII", "url" : "http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/60", "workExample" : [{ "@type": "Book", "potentialAction":{ "@type":"ReadAction", "target": { "@type":"EntryPoint", "urlTemplate":"http://www.histoire-valenciennes-cahv.fr/Memoires/index.php/Memoires/issue/view/60", "actionPlatform":[ "http://schema.org/DesktopWebPlatform", "http://schema.org/IOSPlatform", "http://schema.org/AndroidPlatform" ] }, "expectsAcceptanceOf":{ "@type":"Offer", "Price":26, "priceCurrency":"EUR", "eligibleRegion" : { "@type":"Country", "name":"FR" }, "availability": "http://schema.org/InStock" } } }] } </script>

What is the correct syntax to add such code in the head of my wiki pages?