code: public static HttpClient<ByteBuf, ByteBuf> newClient(String host, int port) {
          return newClient(new InetSocketAddress(host, port));
      }
docs: Creates a new HTTP client instance with the passed host and port for the target server.
  
  @param host Hostname for the target server.
  @param port Port for the target server.
  
  @return A new {@code HttpClient} instance.