Case C-519/20: Judgment of the Court (Fifth Chamber) of 10 March 2022 (request for a preliminary ruling from the Amtsgericht Hannover — Germany) — Proceedings against K (Reference for a preliminary ruling — Immigration policy — Directive 2008/115/EC — Detention for the purpose of removal — Article 16(1) — Direct effect — Specialised detention facility — Concept — Detention in prison accommodation — Conditions — Article 18 — Emergency situation — Concept — Article 47 of the Charter of Fundamental Rights of the European Union — Effective judicial review)