code: public static ProxyHandler proxyHandler(ProxyClient proxyClient, HttpHandler next) {
          return ProxyHandler.builder().setProxyClient(proxyClient).setNext(next).build();
      }
docs: Returns a handler that can act as a load balancing reverse proxy.
  
  @param proxyClient The proxy client to use to connect to the remote server
  @param next The next handler to invoke if the proxy client does not know how to proxy the request
  @return The proxy handler