package main
import "fmt"
type Base struct {
    Name string
}
func (b Base) Describe() string {
    return "Base: " + b.Name
}
type Container struct {
    Base
    Tag string
}
func main() {
    co := Container{
        Base: Base{Name: "Box"},
        Tag:  "Red",
    }
    fmt.Println(co.Describe())
}