Component used: Navigation Version used: 2.3.0 Devices/Android versions reproduced on: Android Studio Preview Canary 13

I am encountering it for a nested graph, haven't tested for the top level graph.

For example:

<?xml version="1.0" encoding="utf-8"?>
<!-- nested_graph.xml -->
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nested_graph"
    app:startDestination="@id/exampleFragment">

    <argument
        android:name="thisArgCantBeReferencedByAndroidStudio"
        app:argType="string"
        app:nullable="true"/>

    <fragment
        android:id="@+id/exampleFragment"
        android:name="com.example.app.ExampleFragment"
        android:label="Example fragment">

    </fragment>

</navigation>

I expect it to generate a NestedGraphNavArgs, and I think it does since it works fine when the app is run. However, the generated file is not visible under the /build folder in Android Studio, and the IDE displayed an unresolved reference error in the class where this NavArgs class is used.