tools/layoutlib/bridge/tests/res/testApp/MyApplication/src/main/res/layout/expand_horz_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:padding="16dp"
              android:orientation="horizontal"
              android:background="#AAAAAA"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content">

    <include layout="@layout/expand_layout"
             android:layout_height="wrap_content"
             android:layout_width="wrap_content" />

</LinearLayout>