code: public static BiFunction<WebsocketInbound, WebsocketOutbound, Publisher<Void>> newHandler(
        ConnectionAcceptor acceptor) {
      return newHandler(acceptor, 0);
    }
docs: Creates a new Websocket handler
  
  @param acceptor the {@link ConnectionAcceptor} to use with the handler
  @return a new Websocket handler
  @throws NullPointerException if {@code acceptor} is {@code null}