<?xml version="1.0"?>
<interfaceDefinition>
  <node name="foo">
    <properties>
      <help>foo</help>
    </properties>
    <children>
      <leafNode name="bar">
        <command>/usr/bin/bar</command>
        <properties>
          <help>bar</help>
          <completionHelp>
            <list>foo bar</list>
            <path>interfaces tunnel</path>
            <script>/usr/bin/foo</script>
          </completionHelp>
        </properties>
      </leafNode>
    </children>
  </node>
</interfaceDefinition>