Case C-580/17: Judgment of the Court (Tenth Chamber) of 8 May 2019 (request for a preliminary ruling from the Riigikohus — Estonia) — Mittetulundusühing Järvelaev v Põllumajanduse Registrite ja Informatsiooni Amet (PRIA) (Reference for a preliminary ruling — Common agricultural policy — Support for rural development by the European Agricultural Fund for Rural Development (EAFRD) — Regulation (EC) No 1698/2005 — Applicability ratione temporis — Article 72 — Durability of investment operations — Substantial modification to a co-financed investment operation — Asset acquired by means of an investment operation co-financed by the EAFRD and leased by the beneficiary of the funding to another — Financing, management and monitoring of the common agricultural policy — Regulation (EC) No 1306/2013 — Articles 54 and 56 — Obligation of the Member States to recover sums unduly paid as a result of irregularity or negligence — Concept of ‘irregularity’ — Initiation of recovery proceedings)