What's dxml DOMEntity(R) type ?

[John Xu via Digitalmars-d-learn]

The parseDOM returns a DOMEntity(R) type, how do I write a 
xmlRoot as global variable?
I need its detailed type (auto / Variant doesn't work).

        import dxml.dom;
        ?? xmlRoot;
        int main() {
            string xml = readText("a.xml");
            auto dom = parseDOM(xml);
            xmlRoot = dom.children[0];
        }