You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: hook.go
    path of file: ./repos/sealer/vendor/github.com/containers/common/pkg/hooks/0.1.0
    
    the code of the file until where you have to start completion: // Package hook is the 0.1.0 hook configuration structure.
package hook

import (
	"encoding/json"
	"errors"
	"strings"

	current "github.com/containers/common/pkg/hooks/1.0.0"
	rspec "github.com/opencontainers/runtime-spec/specs-go"
)

// Version is the hook configuration version defined in this package.
const Version = "0.1.0"

// Hook is the hook configuration structure.
type Hook struct {
	Hook      *string  `json:"hook"`
	Arguments []string `json:"arguments,omitempty"`

	// https://github.com/cri-o/cri-o/pull/1235
	Stages []string `json:"stages"`
	Stage  []string `json:"stage"`

	Cmds []string `json:"cmds,omitempty"`
	Cmd  []string `json:"cmd,omitempty"`

	Annotations []string `json:"annotations,omitempty"`
	Annotation  []string `json:"annotation,omitempty"`

	HasBindM
    
func Read(content []byte) (hook *current.Hook, err error) {
	var raw Hook

	if err = json.Unmarshal(content, &raw); err != nil {
		return nil, err
	}

	if raw.Hook == nil {
		return nil, errors.New("missing required property: hook")
	}

	if raw.Stages == nil {
		raw.Stages = raw.Stage
	} else if raw.Stage != nil {
		return nil, errors.New("cannot set both 'stage' and 'stages'")
	}
	if raw.Stages == nil {
		return nil, errors.New("missing required property: stages")
	}

	if raw.Cmds == nil {
		raw.Cmds = raw.Cmd
	} else if raw.Cmd != nil {
		return nil, errors.New("cannot set both 'cmd' and 'cmds'")
	}

	if raw.Annotations == nil {
		raw.Annotations = raw.Annotation
	} else if raw.Annotation != nil {
		return nil, errors.New("cannot set both 'annotation' and 'annotations'")
	}

	hook = &current.Hook{
		Version: current.Version,
		Hook: rspec.Hook{
			Path: *raw.Hook,
		},
		When: current.When{
			Commands:      raw.Cmds,
			HasBindMounts: raw.HasBindMounts,
			Or:            true,
		},
		Stages: raw.Stages,
	}
	if raw.Arguments != nil {
		hook.Hook.Args = append([]string{*raw.Hook}, raw.Arguments...)
	}
	if raw.Annotations != nil {
		hook.When.Annotations = map[string]string{
			".*": strings.Join(raw.Annotations, "|"),
		}
	}

	return hook, nil
}