Case C-454/19: Judgment of the Court (Fourth Chamber) of 19 November 2020 (request for a preliminary ruling from the Amtsgericht Heilbronn — Germany) — Criminal proceedings against ZW (Reference for a preliminary ruling — Citizenship of the Union — Article 21 TFEU — Right to move and reside freely in the territory of the Member States — Criminal offence specifically concerning international child abduction — Restriction — Justification — Child protection — Proportionality)