<DataSource
    ID="countryDS"
    dataFormat="json"
    dataURL="/isomorphic/system/reference/inlineExamples/grids/data/countryData.json"
><fields>
    <field name="countryCode" title="Code"/>
    <field name="countryName" title="Country"/>
    <field name="capital" title="Capital"/>
</fields></DataSource>
