我想使用類型斷言 frominterface{}到我確定其內容interface{}已嵌入引用的類型。https://play.golang.org/p/G8YrS7WZyQUpackage mainimport "fmt"type S1 struct {}type S2 struct {*S1}func main() {    s := interface{}(&S2{&S1{}})    // I do not know the s type, but know that it is of `struct {*S1}`    _, ok := s.(*S1)    fmt.Println(ok)}在 Go 中甚至有可能嗎？