<moya xmlns="http://moyaproject.com"
      xmlns:let="http://moyaproject.com/let"
      xmlns:db="http://moyaproject.com/db"
      xmlns:html="http://moyaproject.com/html">

    <macro libname="get_comment_object">
        <db:get-or-create
            model="#CommentObject"
            dst="commentobject"
            let:namespace="namespace"
            let:object="object"
            initial="markup=markup,object_url=object_url"/>
        <let commentobject.object_url="object_url"/>
        <return value="commentobject"/>
    </macro>

</moya>