NS_FORWARD_NSIDOMNODE_NO_CLONENODE(nsGenericElement::)
nsXULElement::GetFirstChild(nsIDOMNode** aFirstChild) { nsresult rv; nsCOMPtr<nsIContent> child; rv = ChildAt(0, *getter_AddRefs(child));  if (child) { rv = CallQueryInterface(child, aFirstChild); NS_ASSERTION(NS_SUCCEEDED(rv), "not a DOM node"); return rv; }  *aFirstChild = nsnull; return NS_OK; }
    NS_FORWARD_NSIDOMNODE_NO_CLONENODE(nsGenericElement::)