code: public static <R, W> HttpServerInterceptorChain<R, W, R, W> start() {
          return new HttpServerInterceptorChain<>(new TransformingInterceptor<R, W, R, W>() {
              @Override
              public RequestHandler<R, W> intercept(RequestHandler<R, W> handler) {
                  return handler;
              }
          });
      }
docs: Starts a new interceptor chain.
  
  @return A new interceptor chain.