nsDOMImplementation::CreateDocument(const nsString& aNamespaceURI, const nsString& aQualifiedName,
nsDOMImplementation::CreateDocument(const nsAReadableString& aNamespaceURI, const nsAReadableString& aQualifiedName,
nsDOMImplementation::CreateDocument(const nsString& aNamespaceURI,                                     const nsString& aQualifiedName,                                     nsIDOMDocumentType* aDoctype,                                     nsIDOMDocument** aReturn){    NS_ENSURE_ARG_POINTER(aReturn);        nsresult rv = NS_OK;  *aReturn = nsnull;  NS_NewDOMDocument(aReturn, aNamespaceURI, aQualifiedName, aDoctype, mBaseURI);  return rv;}