Swift ARCore在语义上是否与ARKit'；s"；“让飞机锚定”吗；？

我想知道在

ARCore

/

Kotlin

中是否有类似的语义结构，比如

ARKit

/

Swift

中的

guard let

语句

let anchor: ARAnchor?

guard let planeAnchor = anchor as? ARPlaneAnchor else { 
    print("condition not met")
    return 
}

---

我想我已经找到了ARCore的

planeAnchor

与Elvis操作符和safe cast操作符所需的语义：

public class CenterPosePlaneAnchor { ... }

val anchor: Anchor?
val info = "condition not met"

val planeAnchor = anchor as? CenterPosePlaneAnchor ?: return println(info)