Case T-249/17: Judgment of the General Court of 5 October 2020 — Casino, Guichard-Perrachon and AMC v Commission (Competition — Agreements, decisions and concerted practices — Administrative procedure — Decision ordering an inspection — Plea of illegality against Article 20 of Regulation (EC) No 1/2003 — Right to an effective remedy — Equality of arms — Obligation to state reasons — Right to inviolability of the home — Sufficiently strong evidence — Proportionality)