https://www.php.net/manual/en/reflectionclass.isiterable.php
PHP: ReflectionClass::isIterable - Manual
Check whether this class is iterable
phpmanual
https://developer.android.com/ndk/reference/classandroid/1-1internal-1-1details-1-1-is-iterable
android::internal::details::IsIterable Class Reference | Android NDK | Android Developers
class referenceandroidinternaldetailsndk