kekrozsak/src/KekRozsak/FrontBundle/Resources/config/services.yml

parameters:
#    kek_rozsak_front.example.class: KekRozsak\FrontBundle\Example

services:
#    kek_rozsak_front.example:
#        class: %kek_rozsak_front.example.class%
#        arguments: [@service_id, "plain_value", %parameter%]
        kek_rozsak_front.twig_extension.news:
                class: KekRozsak\FrontBundle\Twig\NewsExtension
                arguments:
                        doctrine: @doctrine
                tags:
                        - { name: twig.extension }