jps/model-serialization/testData/sampleProject/.idea/modules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
  <component name="ProjectModuleManager">
    <modules>
      <module fileurl="file://$PROJECT_DIR$/main.iml" filepath="$PROJECT_DIR$/main.iml" />
      <module fileurl="file://$PROJECT_DIR$/util/util.iml" filepath="$PROJECT_DIR$/util/util.iml" />
      <module fileurl="file://$PROJECT_DIR$/xxx/xxx.iml" filepath="$PROJECT_DIR$/xxx/xxx.iml" />
    </modules>
  </component>
</project>