package example import ( "fmt" ) type GoCallback interface { Callback deleteCallback() IsGoCallback() } type goCallback struct { Callback } func (p *goCallback) deleteCallback() { DeleteDirectorCallback(p.Callback) } func (p *goCallback) IsGoCallback() {} type overwrittenMethodsOnCallback struct { p Callback } func NewGoCallback() GoCallback { om := &overwrittenMethodsOnCallback{} p := NewDirectorCallback(om) om.p = p return &goCallback{Callback: p} } func DeleteGoCallback(p GoCallback) { p.deleteCallback() } func (p *overwrittenMethodsOnCallback) Run() { fmt.Println("GoCallback.Run") }