const patchStrategy = "x-kubernetes-patch-strategy"

type PatchMeta struct {
	patchStrategies []string
	patchMergeKey   string
}

func (pm *PatchMeta) GetPatchStrategies() []string {
	if pm.patchStrategies == nil {
		return []string{}
	}
	return pm.patchStrategies
}

func (pm *PatchMeta) SetPatchStrategies(ps []string) {
	pm.patchStrategies = ps
}

func (pm *PatchMeta) GetPatchMergeKey() string {
	return pm.patchMergeKey

	if err != nil {
		item.err = err
		return
	}
	item.patchmeta = PatchMeta{
		patchStrategies: patchStrategies,
		patchMergeKey:   mergeKey,
	}
	item.subschema = subschema
}

type sliceItem struct {
	key          string
	path         *openapi.Path
	err          error
	patchmeta    PatchMeta
	subschema    openapi.Schema
	hasVisitKind bool
}

	}
	if patches := cfilter.Patches[networking.EnvoyFilter_INVALID]; len(patches) != 1 {
		t.Fatalf("unexpected patches of %v: %v", networking.EnvoyFilter_INVALID, cfilter.Patches)
	}
	if patches := cfilter.Patches[networking.EnvoyFilter_HTTP_ROUTE]; len(patches) != 1 { // check num of invalid http route patches
		t.Fatalf("unexpected patches of %v: %v", networking.EnvoyFilter_HTTP_ROUTE, cfilter.Patches)
	}

          - kind: Service
            name: istiod
            patches:
              - path: spec.ports.[name:https-dns].port
                value: 11111 # OVERRIDDEN
          # Cluster scope resource
          - kind: MutatingWebhookConfiguration
            name: istio-sidecar-injector-istio-control
            patches:

}

// Returns the keys of all the wrapped envoyfilters.
func (efw *EnvoyFilterWrapper) Keys() []string {
	if efw == nil {
		return nil
	}
	keys := sets.String{}
	for _, patches := range efw.Patches {
		for _, patch := range patches {
			keys.Insert(patch.Key())
		}
	}
	return sets.SortedList(keys)
}

// Returns the keys of all the wrapped envoyfilters.

}

// applyKubeletConfigPatches reads patches from a directory and applies them over the input kubeletBytes
func applyKubeletConfigPatches(kubeletBytes []byte, patchesDir string, output io.Writer) ([]byte, error) {
	patchManager, err := patches.GetPatchManagerForPath(patchesDir, patches.KnownTargets(), output)
	if err != nil {
		return nil, err
	}

	patchTarget := &patches.PatchTarget{

        - kind: Deployment
          name: istiod
          patches:
          - path: spec.template.spec.containers.[name:discovery].args.[30m]
            value: "60m" # OVERRIDDEN
          - path: spec.template.spec.containers.[name:discovery].ports.[containerPort:8080].containerPort
            value: 8090 # OVERRIDDEN
        - kind: Service
          name: istiod
          patches:
          - path: spec.ports.[name:grpc-xds].port

		log.Errorf("clusters patch %s/%s caused panic, so the patches did not take effect", efw.Namespace, efw.Name)
		IncrementEnvoyFilterErrorMetric(Cluster)
	})
	// In case the patches cause panic, use the clusters generated before to reduce the influence.
	out = c
	if efw == nil {
		return
	}
	for _, cp := range efw.Patches[networking.EnvoyFilter_CLUSTER] {
		applied := false

		fg := fuzz.New(t, data)
		patches := fuzz.Slice[*networking.EnvoyFilter_EnvoyConfigObjectPatch](fg, patchCount%30)
		proxy := fuzz.Struct[*model.Proxy](fg)
		mesh := fuzz.Struct[*meshconfig.MeshConfig](fg)
		c := fuzz.Struct[*cluster.Cluster](fg)

		serviceDiscovery := memory.NewServiceDiscovery()
		env := newTestEnvironment(serviceDiscovery, mesh, buildEnvoyFilterConfigStore(patches))
		push := model.NewPushContext()

		}
	}

	return ret.String(), errs.ToError()
}

// applyPatches applies the given patches against the given object. It returns the resulting patched YAML if successful,
// or a list of errors otherwise.
func applyPatches(base *object.K8sObject, patches []*v1alpha1.K8SObjectOverlay_PathValue) (outYAML string, errs util.Errors) {
	bo := make(map[any]any)
	by, err := base.YAML()
	if err != nil {