lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/data/res/layout/layout2.xml

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

    <RadioButton
        android:id="@+id/radioButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="RadioButton" />

    <include
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        layout="@layout/layout3" />

    <include
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        layout="@layout/layout4" />

</LinearLayout>