corev1 "k8s.io/api/core/v1"
	"k8s.io/client-go/rest"

	meshconfig "istio.io/api/mesh/v1alpha1"
	"istio.io/api/security/v1beta1"
	"istio.io/istio/pilot/pkg/controllers/untaint"
	kubecredentials "istio.io/istio/pilot/pkg/credentials/kube"
	"istio.io/istio/pilot/pkg/features"
	istiogrpc "istio.io/istio/pilot/pkg/grpc"
	"istio.io/istio/pilot/pkg/keycertbundle"
	"istio.io/istio/pilot/pkg/leaderelection"

                    authentication.addHost(proxy.host, proxy.port);
                    useCredentials(credentialsProvider, Collections.singleton(authentication));
                }
            }
        }
        builder.setRoutePlanner(new SystemDefaultRoutePlanner(ProxySelector.getDefault()));
    }

    private void useCredentials(CredentialsProvider credentialsProvider, Collection<? extends Authentication> authentications) {