Case C-396/19 P: Judgment of the Court (Sixth Chamber) of 21 October 2020 — European Central Bank v Insolvent Estate of Espírito Santo Financial Group SA (Appeal — Decision 2004/258/EC — Article 4(1)(a) — Protocol on the Statute of the European System of Central Banks and of the European Central Bank (ECB) — Article 10.4 — Access to ECB documents — Decision of the Governing Council — Confidentiality of the meetings and deliberations of ECB bodies — Outcome of deliberations — Partial refusal of access — Undermining of the protection of the public interest — Obligation to state reasons)