149Indeed, as the Court has already held, as the rules regarding the manner in which the EU institutions arrive at their decisions are laid down in the Treaties and are not within the discretion of the Member States or of the institutions themselves, the Treaties alone may, in particular cases, empower an institution to amend a decision-making procedure established by the Treaties (judgment of 10 September 2015, Parliament v Council, C‑363/14, EU:C:2015:579, paragraph 43).
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