Case C-12/20: Judgment of the Court (Fifth Chamber) of 24 June 2021 (request for a preliminary ruling from the Oberverwaltungsgericht für das Land Nordrhein-Westfalen — Germany) — DB Netz AG v Bundesrepublik Deutschland (Reference for a preliminary ruling — Rail transport — International rail freight corridors — Regulation (EU) No 913/2010 — Article 13(1) — Establishment of a one-stop shop for each freight corridor — Article 14 — Nature of the framework for the allocation of the infrastructure capacity on the freight corridor laid down by the executive board — Article 20 — Regulatory bodies — Directive 2012/34/EU — Article 27 — Procedure for submitting applications for infrastructure capacity — Role of infrastructure managers — Articles 56 and 57 — Functions of the regulatory bodies and cooperation between regulatory bodies)