func (t *T) SetupForServicePair(setupFn svcPairSetupFn) *T {
	t.deploymentPairSetup = append(t.deploymentPairSetup, setupFn)
	return t
}

// SetupForDestination is run each time the destination Service (but not destination cluster) changes.
func (t *T) SetupForDestination(setupFn dstSetupFn) *T {
	t.destinationDeploymentSetup = append(t.destinationDeploymentSetup, setupFn)
	return t
}

func (t *T) hasDestinationSetup() bool {

				host     = "testsingletlsgateway-secretrotation.example.com"
			)
			allInstances := []echo.Instances{ingressutil.A, ingressutil.VM}
			for _, instances := range allInstances {
				echotest.New(t, instances).
					SetupForDestination(func(t framework.TestContext, to echo.Target) error {
						ingressutil.SetupConfig(t, echo1NS, ingressutil.TestConfig{
							Mode:           "SIMPLE",
							CredentialName: credName,
							Host:           host,

							}))
					},
				},
			}

			for _, c := range cases {
				t.NewSubTest(c.name).Run(func(t framework.TestContext) {
					echotest.New(t, apps.All.Instances()).
						SetupForDestination(func(t framework.TestContext, to echo.Target) error {
							args := map[string]string{
								"Namespace": ns.Name(),
								"dst":       to.Config().Service,
							}

						)
					},
				},
			}

			for _, c := range cases {
				t.NewSubTest(c.name).Run(func(t framework.TestContext) {
					echotest.New(t, apps.All.Instances()).
						SetupForDestination(func(t framework.TestContext, to echo.Target) error {
							args := map[string]string{
								"Namespace": ns.Name(),
								"dst":       to.Config().Service,
								"delay":     c.delay,

func RunTestMultiMtlsGateways(ctx framework.TestContext, inst istio.Instance, ns namespace.Getter) { // nolint:interfacer
	var credNames []string
	var tests []TestConfig
	echotest.New(ctx, A).
		SetupForDestination(func(ctx framework.TestContext, to echo.Target) error {
			for i := 1; i < 6; i++ {
				cred := fmt.Sprintf("runtestmultimtlsgateways-%d", i)
				tests = append(tests, TestConfig{
					Mode:           "MUTUAL",