nsHTMLDocument::GetImplementation(nsIDOMDOMImplementation** aImplementation) { return nsDocument::GetImplementation(aImplementation); }
NS_IMETHOD    GetImplementation(nsIDOMDOMImplementation** aImplementation) { return nsDocument::GetImplementation(aImplementation); }
nsHTMLDocument::GetImplementation(nsIDOMDOMImplementation** aImplementation){   return nsDocument::GetImplementation(aImplementation); }