Case T-15/18: Judgment of the General Court of 6 October 2021 — OCU v ECB (Access to documents — Decision 2004/258/EC — Documents relating to the adoption of a resolution scheme in respect of Banco Popular Español — Refusal to grant access — Exception relating to the protection of the confidentiality of information that is protected as such under EU law — Concept of confidential information — Exemptions from the obligation of professional secrecy — Right to a fair hearing)