phpbb/tests/functional/fixtures/ext/foo/bar/config/services.yml

services:
    foo_bar.controller:
        class: foo\bar\controller\controller
        arguments:
            - '@controller.helper'
            - '@path_helper'
            - '@template'
            - '@config'
            - '@user'
            - '%core.root_path%'
            - '%core.php_ext%'

    foo_bar.listener.permission:
        class: foo\bar\event\permission
        tags:
            - { name: event.listener }

    foo_bar.listener.user_setup:
        class: foo\bar\event\user_setup
        tags:
            - { name: event.listener }

    foo_bar.listener.template_event_order:
        class: foo\bar\event\template_event_order
        tags:
            - { name: event.listener }