Case C-415/22, Acerta and Others: Judgment of the Court (Seventh Chamber) of 16 November 2023 (request for a preliminary ruling from the Tribunal du travail francophone de Bruxelles — Belgium) — JD v Acerta — Caisse d’assurances sociales ASBL, Institut national d’assurances sociales pour travailleurs indépendants (Inasti), Belgian State (Reference for a preliminary ruling — Officials of the European Union — Staff Regulations of Officials of the European Union — Compulsory affiliation to the social security scheme of the EU institutions — Retired official of the European Union who pursues a professional activity as a self-employed person — Liability for social security contributions under the scheme of the Member State in which that activity is carried out)