Case C-515/20: Judgment of the Court (Sixth Chamber) of 3 February 2022 (request for a preliminary ruling from the Bundesfinanzhof — Germany) — B AG v Finanzamt A (Reference for a preliminary ruling — Value added tax (VAT) — Directive 2006/112/EC — Article 122 — Reduced rate for supplies of wood for use as firewood — Differentiation on the basis of the objective characteristics and properties of the goods — Types of wood intended for use as fuel which serve the same consumer need and are in competition with each other — Principle of fiscal neutrality)