我知道如何在同一包中的结构中嵌入其他结构，但是如何在其他包的结构中嵌入结构？

dog.go

package dog

import "fmt"

type Dog struct {
    Name string
}

func (this *Dog) callMyName() {
    fmt.Printf("Dog my name is %q\n", this.Name)
}

main.go

package main

import "/path/to/dog"

type BDog struct {
    dog.Dog
    name string
}

func main() {
    b := new(BDog)
    b.Name = "this is a Dog name"
    b.name = "this is a BDog name"
    b.callMyName()
}

当我运行main.go时，它告诉我一个错误：

./main.go:14: b.callMyName undefined (type *BDog has no field or method callMyName)