<bpmn2:lane id="Lane_1" name="Lane"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:bpmn2="http://www.omg.org/spec/BPMN/20100524/MODEL">
  <bpmn2:childLaneSet xsi:type="bpmn2:tLaneSet" id="LaneSet_2">
    <bpmn2:lane id="Lane_2" name="Nested Lane">
    </bpmn2:lane>
  </bpmn2:childLaneSet>
</bpmn2:lane>