t.Fatal(err)
				}
				if upstreamProxyProtocol.Config.Version != core.ProxyProtocolConfig_Version(test.proxyProtocolSettings.Version) {
					t.Errorf("Expected proxy protocol version %v, got %v", test.proxyProtocolSettings.Version, upstreamProxyProtocol.Config.Version)
				}
				if test.validateTLSContext != nil {
					ctx := &tls.UpstreamTlsContext{}

	}
	c := opts.mutable
	if c.cluster.TransportSocket != nil {
		// add an upstream proxy protocol wrapper for transportSocket
		c.cluster.TransportSocket = &core.TransportSocket{
			Name: "envoy.transport_sockets.upstream_proxy_protocol",
			ConfigType: &core.TransportSocket_TypedConfig{TypedConfig: protoconv.MessageToAny(&proxyprotocol.ProxyProtocolUpstreamTransport{