// Data must contain the bytes that will be patched.
	Data []byte
}

// PatchManager defines an object that can apply patches.
type PatchManager struct {
	patchSets    []*patchSet
	knownTargets []string
	output       io.Writer
}

// patchSet defines a set of patches of a certain type that can patch a PatchTarget.
type patchSet struct {
	targetName string
	patchType  types.PatchType
	patches    []string
}

			merge.Merge(lis, lp.Value)
		}
	}
	patchListenerFilters(patchContext, patches[networking.EnvoyFilter_LISTENER_FILTER], lis)
	patchFilterChains(patchContext, patches, lis)
}

// patchListenerFilters patches passed in listener filters with listener filter patches.
func patchListenerFilters(patchContext networking.EnvoyFilter_PatchContext,
	patches []*model.EnvoyFilterConfigPatchWrapper,
	lis *listener.Listener,
) {

func (in *Patches) DeepCopyInto(out *Patches) {
	*out = *in
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Patches.
func (in *Patches) DeepCopy() *Patches {
	if in == nil {
		return nil
	}
	out := new(Patches)
	in.DeepCopyInto(out)
	return out
}

func (in *Patches) DeepCopyInto(out *Patches) {
	*out = *in
	return
}

// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Patches.
func (in *Patches) DeepCopy() *Patches {
	if in == nil {
		return nil
	}
	out := new(Patches)
	in.DeepCopyInto(out)
	return out
}

	// The flag "--skip-phases" takes precedence over this field.
	// +optional
	SkipPhases []string `json:"skipPhases,omitempty"`

	// Patches contains options related to applying patches to components deployed by kubeadm during
	// "kubeadm init".
	// +optional
	Patches *Patches `json:"patches,omitempty"`
}

// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object

	// The flag "--skip-phases" takes precedence over this field.
	SkipPhases []string

	// Patches contains options related to applying patches to components deployed by kubeadm during
	// "kubeadm init".
	Patches *Patches

	// Timeouts holds various timeouts that apply to kubeadm commands.
	Timeouts *Timeouts
}

	} else {
		return cmdutil.TypeMismatchErr("renewCerts", "bool")
	}

	if len(flags.patchesDir) > 0 {
		upgradeCfg.Apply.Patches = &kubeadmapi.Patches{Directory: flags.patchesDir}
	} else if upgradeCfg.Apply.Patches == nil {
		upgradeCfg.Apply.Patches = &kubeadmapi.Patches{}
	}

	// Now; perform the upgrade procedure
	if err := PerformControlPlaneUpgrade(flags, client, waiter, initCfg, upgradeCfg); err != nil {

	// The flag "--skip-phases" takes precedence over this field.
	// +optional
	SkipPhases []string `json:"skipPhases,omitempty"`

	// Patches contains options related to applying patches to components deployed by kubeadm during
	// "kubeadm init".
	// +optional
	Patches *Patches `json:"patches,omitempty"`

	// Timeouts holds various timeouts that apply to kubeadm commands.
	// +optional
	Timeouts *Timeouts `json:"timeouts,omitempty"`

}

// applyCoreDNSDeploymentPatches reads patches from a directory and applies them over the input coreDNSDeploymentBytes
func applyCoreDNSDeploymentPatches(coreDNSDeploymentBytes []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{

	initCfg.NodeRegistration.IgnorePreflightErrors = sets.List(ignorePreflightErrorsSet)

	var patchesDir string
	if upgradeCfg.Node.Patches != nil {
		patchesDir = cmdutil.ValueFromFlagsOrConfig(cmd.Flags(), options.Patches, upgradeCfg.Node.Patches.Directory, nodeOptions.patchesDir).(string)
	} else {
		patchesDir = nodeOptions.patchesDir
	}

	return &nodeData{
		cfg:                   upgradeCfg,