将struct转换为YAML文件golang，如何避免在yaml输出中出现空引号？

package main

import (
    "fmt"
    "gopkg.in/yaml.v3"
)

type Person struct {
    Name    string `yaml:"name"`
    Age     int    `yaml:"age"`
    Address string `yaml:"address,omitempty"`
}

func main() {
    p := Person{
        Name:    "John Doe",
        Age:     30,
        Address: "", // 空字符串
    }

    // 自定义序列化过程
    data, err := yaml.Marshal(&p)
    if err != nil {
        fmt.Printf("Error marshaling YAML: %v\n", err)
        return
    }

    fmt.Println(string(data))
}

package main

import (
    "fmt"
    "gopkg.in/yaml.v3"
)

type Person struct {
    Name    string `yaml:"name"`
    Age     int    `yaml:"age"`
    Address string `yaml:"address,omitempty"`
}

func (p Person) MarshalYAML() (interface{}, error) {
    type Alias Person
    return yaml.Marshal(&struct {
        *Alias
        Address *string `yaml:"address,omitempty"`
    }{
        Alias:   (*Alias)(p),
        Address: func() *string {
            if p.Address == "" {
                return nil
            }
            return &p.Address
        }(),
    })
}

func main() {
    p := Person{
        Name:    "John Doe",
        Age:     30,
        Address: "", // 空字符串
    }

    data, err := yaml.Marshal(&p)
    if err != nil {
        fmt.Printf("Error marshaling YAML: %v\n", err)
        return
    }

    fmt.Println(string(data))
}