samples/SupportLeanbackShowcase/app/src/main/res/layout/page_list_row.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <fragment
        android:id="@+id/page_list_fragment"
        android:name="android.support.v17.leanback.supportleanbackshowcase.app.page.PageAndListRowFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</FrameLayout>