Case T-523/15: Judgment of the General Court of 11 July 2019 — Italmobiliaire and Others v Commission (Competition — Agreements, decisions and concerted practices — Retail food packaging market — Decision finding an infringement of Article 101 TFEU — Attributability of the unlawful conduct — Conditions for the granting of immunity — 2006 Guidelines on the method of setting fines — Sales value — Ceiling for the fine — Length of the administrative procedure — Reasonable period of time — Ability to pay)