Case C-302/19: Judgment of the Court (Fifth Chamber) of 25 November 2020 (request for a preliminary ruling from the Corte suprema di cassazione — Italy) — Istituto nazionale della previdenza sociale v WS (Reference for a preliminary ruling — Directive 2011/98/EU — Rights for third country workers who hold single permits — Article 12 — Right to equal treatment — Social security — Legislation of a Member State excluding, for the purposes of determining entitlement to a family benefit, the family members of the holder of a single permit who do not reside in the territory of that Member State)