parameters:
    ezdemo.pre_content_view_listener.class: Acme\DemoBundle\EventListener\PreContentViewListener

services:
    ezdemo.pre_content_view_listener:
        class: %ezdemo.pre_content_view_listener.class%
        tags:
            - {name: kernel.event_listener, event: exponential.pre_content_view, method: onPreContentView}