Case C-264/18: Judgment of the Court (Fifth Chamber) of 6 June 2019 (request for a preliminary ruling from the Grondwettelijk Hof — Belgium) — P. M., N. G.d.M., P. V.d.S. v Ministerraad (Reference for a preliminary ruling — Procedures for the award of public works contracts, public supply contracts and public service contracts — Directive 2014/24/EU — Article 10, (c), and (d)(i),(ii) and (v) — Validity — Scope — Exclusion of arbitration and conciliation services and of certain legal services — Principles of equal treatment and subsidiarity — Articles 49 and 56 TFEU)