Case T-631/19: Judgment of the General Court of 7 September 2022 — BNetzA v ACER (Energy — Internal market in electricity — Regulation (EU) 2019/942 — Decision of the Board of Appeal of ACER — Action for annulment — Act not open to challenge — Inadmissibility — ACER’s competence — Article 8 of Regulation (EC) No 713/2009 — Article 6(10) of Regulation 2019/942 — Article 9(12) of Regulation (EU) 2015/1222 — Applicable law — Regulation (EU) 2019/943)