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: vo.go
    path of file: ./repos/go-doudou/cmd/internal/svc/testdata/vo
    
    the code of the file until where you have to start completion: package vo

import "encoding/json"

//go:generate go-doudou name --file $GOFILE -o

// 筛选条件
type PageFilter struct {
	// 真实姓名，前缀
    
func (k *KeyboardLayout) UnmarshalJSON(bytes []byte) error {
	var _k string
	err := json.Unmarshal(bytes, &_k)
	if err != nil {
		return err
	}
	k.StringSetter(_k)
	return nil
}