tests/carservice_test/res/raw/car_audio_configuration.xml

<?xml version="1.0" encoding="utf-8"?>
<carAudioConfiguration version="2">
    <zones>
        <zone name="primary zone" isPrimary="true" audioZoneId="0" occupantZoneId="1">
            <volumeGroups>
                <group>
                    <device address="bus0_media_out">
                        <context context="music"/>
                    </device>
                    <device address="bus3_call_ring_out">
                        <context context="call_ring"/>
                    </device>
                </group>
                <group>
                    <device address="bus1_navigation_out">
                        <context context="navigation"/>
                        <context context="emergency"/>
                        <context context="safety"/>
                        <context context="vehicle_status"/>
                        <context context="announcement"/>
                    </device>
                </group>
            </volumeGroups>
            <displays>
                <display port="1"/>
                <display port="2"/>
            </displays>
        </zone>
        <zone name="rear seat zone" audioZoneId="2">
            <volumeGroups>
                <group>
                    <device address="bus100_rear_seat">
                        <context context="music"/>
                        <context context="navigation"/>
                        <context context="voice_command"/>
                        <context context="call_ring"/>
                        <context context="call"/>
                        <context context="alarm"/>
                        <context context="system_sound"/>
                        <context context="notification"/>
                        <context context="emergency"/>
                        <context context="safety"/>
                        <context context="vehicle_status"/>
                        <context context="announcement"/>
                    </device>
                </group>
            </volumeGroups>
        </zone>
    </zones>
</carAudioConfiguration>