Case C-95/10: Judgment of the Court (Third Chamber) of 17 March 2011 (reference for a preliminary ruling from the Supremo Tribunal Administrativo — Portugal) — Strong Segurança SA v Município de Sintra, Securitas-Serviços e Tecnologia de Segurança (Public service contracts — Directive 2004/18/EC — Article 47(2) — Direct effect — Whether applicable to the services referred to in Annex II B to that directive)