Case C-328/19: Judgment of the Court (Eighth Chamber) of 18 June 2020 (request for a preliminary ruling from the Korkein hallinto-oikeus — Finland) — proceedings brought by Porin kaupunki (Reference for a preliminary ruling — Public procurement — Directive 2004/18/EC — Article 1(2)(a) — Public procurement in the field of transport services — Cooperation agreement between municipalities regarding the organisation and provision of social and healthcare services based on the model of the ‘municipality responsible’ under Finnish law — Transfer of responsibility for the organisation of the services to one of the municipalities in the relevant cooperation zone — In-house contract — Award of contract for transport services to a company wholly owned by the municipality responsible without a call for tenders)