riff_app/app/src/main/res/navigation/navigation_nowplaying.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/navigation_nowplaying"
    app:startDestination="@id/fragment_nowplaying"
    tools:ignore="UnusedNavigation">

    <fragment
        android:id="@+id/fragment_nowplaying"
        android:name="fr.riff_app.riff.ui.nowplaying.NowPlayingFragment"
        android:label="@string/title_nowplaying" />

</navigation>