Golang继承和方法重写

Clarification: I'm just learning GO, and came across this problem.

I'm trying to implement a "class" that inherit a method that invokes a "virtual" method that should be implemented by the child class. Here's my code:

package main

import (
    "fmt"
    "sync"
)

type Parent struct {
  sync.Mutex
  MyInterface
}

func (p *Parent) Foo() {
  p.Lock()
  defer p.Unlock()
  p.Bar()
}

func (p *Parent) B(){
  panic("NOT IMPLEMENTED")
}

func (p *Parent) A() {
  p.Lock()
  defer p.Unlock()
  p.B()
}

type MyInterface interface {
  Foo()
  Bar()
}

type Child struct {
  Parent
  Name string
}

func (c *Child) Bar(){
  fmt.Println(c.Name)
}

func (c *Child) B(){
  fmt.Println(c.Name)
}

func main() {
  c := new(Child)
  c.Name = "Child"
  // c.A() panic
  c.Foo() // pointer error
}

I left out some code regarding the sync.Mutex that does some async update to the values of Child.

So apparently in A() or Foo() the pointer p have type Parent. How should I change my code so that A/Foo refer to B/Bar defined in the Child class?