<DataSource ID="Example" inheritsFrom="TreeNode">
    <fields>
        <field name="showSource" type="boolean"/>
        <field name="external" type="boolean"/>
        <field name="showSkinSwitcher" type="boolean"/>
        <field name="children" type="Object" multiple="true"/>
        <field name="tabs"    type="Object"   multiple="true"/>
    </fields>
</DataSource>