QTest XML output files do not record duration for each individual data tag

<?xml version="1.0" encoding="UTF-8"?>
<TestCase name="tst_QGeoRouteRequest">
  <TestFunction name="numberAlternativeRoutes">
    <Incident type="pass" file="" line="0" />
    <Duration msecs="2.26295"/>
  </TestFunction>
  <TestFunction name="routeOptimization">
    <Incident type="pass" file="" line="0">
      <DataTag><![CDATA[optimization1]]></DataTag>
    </Incident>
    <Incident type="pass" file="" line="0">
      <DataTag><![CDATA[optimization2]]></DataTag>
    </Incident>
    <Incident type="pass" file="" line="0">
      <DataTag><![CDATA[optimization3]]></DataTag>
    </Incident>
    <Incident type="pass" file="" line="0">
      <DataTag><![CDATA[optimization4]]></DataTag>
    </Incident>
    <Duration msecs="2.35615"/>
  </TestFunction>
 [...]
  <Duration msecs="35.1167"/>
</TestCase>