if (function.bodyBlockExpression != null) {
            // Given `fun f(...): R { blockExpression }`, `{ blockExpression }` is mapped to the enclosing anonymous function,
            // which may raise an exception if we attempt to retrieve, e.g., callable declaration from it.
            return null
        }
        if (function.typeReference == null) return null

- [`KT-55297`](https://youtrack.jetbrains.com/issue/KT-55297) kotlin-stdlib should declare constraints on kotlin-stdlib-jdk8 and kotlin-stdlib-jdk7
- [`KT-57838`](https://youtrack.jetbrains.com/issue/KT-57838) Native: raise ExperimentalNativeApi opt-in requirement level to ERROR
- [`KT-61028`](https://youtrack.jetbrains.com/issue/KT-61028) Behavioural changes to the Native stdlib API