Go 1.18에서 제네릭을 사용하여 특정 유형의 새 개체를 만드는 방법은 무엇입니까?

type FruitFactory[T any] struct{}

func (f FruitFactory[T]) Create() *T {
    // How to create a non-nil fruit here?
    return nil
}

type Apple struct {
    color string
}

func example() {
    appleFactory := FruitFactory[Apple]{}
    apple := appleFactory.Create()
    // Panics because nil pointer access
    apple.color = "red"
}

func (f FruitFactory[T]) Create() *T {
    var a T
    return &a
}

func (f FruitFactory[T]) Create() *T {
    return new(T)
}

// Constraining a type to its pointer type
type Ptr[T any] interface {
    *T
}

// The first type parameter will match pointer types and infer U
type FruitFactory[T Ptr[U], U any] struct{}

func (f FruitFactory[T,U]) Create() T {
    // Declare var of non-pointer type. This is not nil!
    var a U
    // Address it and convert to pointer type (still not nil)
    return T(&a)
}