Groovy更改子节点的xml节点名称

Question

需要有关Groovy脚本的帮助才能将所有功能标记更改为功能

<?XML version="1.0" encoding="UTF-8" standalone="yes"?>
<featureList>
  <feature>
   </feature>
<feature>
   </feature>
<feature>
   </feature>
<feature>`
   </feature>

</featureList>