Case C-670/21, BA (Inheritance — Public housing policy in the European Union): Judgment of the Court (First Chamber) of 12 October 2023 (request for a preliminary ruling from the Finanzgericht Köln — Germany) — BA v Finanzamt X (Reference for a preliminary ruling — Taxation — Free movement of capital — Articles 63 to 65 TFEU — Inheritance tax — Movement of capital between Member States and third countries — Immovable property located in a third country — More favourable tax treatment for immovable property located in a Member State or in a State which is party to the Agreement on the European Economic Area — Restriction — Justification — Housing policy — Effectiveness of fiscal supervision)