samples/wearable/SynchronizedNotifications/Common/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android.wearable.synchronizednotifications.common">

    <application android:allowBackup="true"
        android:label="@string/app_name">
    </application>

</manifest>