Repetition switchPath simplest example

The following code mentioned earlier:

```
        "repetition": {
            "prototype": "montage/ui/repetition.reel",
            "properties": {
                "element": {"#": "repetition"}.
			"switchPath": "object.isAdmin ? ‘admin’ : ‘user’ "
            }
        },

<ul data-montage-id="repetition">
    <li data-arg="admin"  data-montage-id="admin"></li>
    <li data-arg="user" data-montage-id="user"></li>
</ul>
```

I made a simple test case from it and it doesn’t show anything because contentController is empty. I’m probably missing something obvious, but how do inner components ('admin' and 'user' in my example) provide content for repetition?