kubernetes/vendor/github.com/modern-go/reflect2/go_above_118.go

// m escapes into the return value, but the caller of mapiterinit
// doesn't let the return value escape.
//go:noescape
//go:linkname mapiterinit reflect.mapiterinit
func mapiterinit(rtype unsafe.Pointer, m unsafe.Pointer, it *hiter)

func (type2 *UnsafeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator { … }