<DataSource ID="DSRequestModifier">
    <fields>
        <field name="fieldName" type="string"/>
        <field name="operator" type="string"/>
        <field name="value" type="string"/>
        <field name="start" type="string"/>
        <field name="end" type="string"/>
        <field name="criteria" type="Criterion" multiple="true"/>
        <field name="criterion" type="Criterion" moveTo="criteria" hidden="true" />
        <field name="Criterion" type="Criterion" moveTo="criteria" hidden="true" />
    </fields>
</DataSource>