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<jmeterTestPlan version="1.2" properties="1.8">
  <hashTree>
    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">
    ...
    </TestPlan>
    <hashTree>
      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group" enabled="true">
      ...
      </ThreadGroup>
      <hashTree>
        <RecordingController guiclass="RecordController" testclass="RecordingController" testname="Recording Controller" enabled="true"/>
        <hashTree>
          <HTTPSampler guiclass="HttpTestSampleGui" testclass="HTTPSampler" testname="/my_webapp/root/page" enabled="true">
          ...
          </HTTPSampler>
          <hashTree>
            <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="Browser-derived headers" enabled="true">
            ...
            </HeaderManager>
            ...
            <hashTree/>
          </hashTree>
      <hashTree/>
    </hashTree>
  </hashTree>