Case T-252/19: Judgment of the General Court of 21 April 2021 — Pech v Council (Access to documents — Regulation (EC) No 1049/2001 — Second indent of Article 4(2) of Regulation No 1049/2001 — Protection of legal advice — First subparagraph of Article 4(3) of Regulation No 1049/2001 — Protection of the decision-making process — Refusal to grant full access to a legal opinion of the Council’s Legal Service)