How to import 'ember-routing/system/query_params' in an ember-cli app

I think I do not understand well the modules hierarchy in an ember-cli app.

I need to

import QueryParams from 'ember-routing/system/query_params';

in one of my app services.

but the console shouts at me

Error: Could not find module 'ember-routing/system/query_params' imported from 'my-app/services/menu'

What path should I use to import this module ?

Thanks