<DataStructure Name="testdata">
    <Version>1</Version>
    <Groups>
        <Group Name="definition">
            <Variables>
                <String Name="name">
                    <Max>64</Max>
                </String>
                <Bool Name="ismage"/>
            </Variables>
        </Group>
        <Group Name="race">
            <Variables>
                <String Name="id"/>
                <String Name="name"/>
                <Int Name="speed"/>
            </Variables>
        </Group>
        <Group Name="buff">
            <Variables>
                <Int Name="speed"/>
            </Variables>
        </Group>
    </Groups>
</DataStructure>