}

        @Override
        public Node getNamedItemNS(String namespaceURI, String localName) {
            return null;
        }

        @Override
        public Node setNamedItemNS(Node arg) {
            return null;
        }

        @Override
        public Node removeNamedItemNS(String namespaceURI, String localName) {
            return null;
        }
    }