<http://schema.org/availability>
"http://schema.org/OutOfStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/it/produktdetail/7751611/Catalogo/Illuminazione/Lampade-da-comodino-%26-da-tavolo/Base-per-lampade-Awasa-Charme>