Case T-136/19: Judgment of the General Court of 25 October 2023 — Bulgarian Energy Holding and Others v Commission (Competition — Abuse of a dominant position — Internal market in natural gas — Decision finding an infringement of Article 102 TFEU — Regulated market — Definition of the relevant market — Romanian Transit Pipeline 1 — Holder of an exclusive right to use the Romanian Pipeline 1 — Refusal to grant access — Public supply obligation — State action defence — Transmission system operator — Storage system operator — Anticompetitive strategy — Exclusionary effects — Single and continuous infringement — Rights of the defence)