The only language I've found / used so far that has these (expected) mechanics is Swift, which, when using a `let` for e.g. a list, will make the list itself immutable (in addition to the reference). It's really something that is confusing in every language that has some form of 'final', be it Java (which added immutable list implementations or wrappers to their existing collections), C++, JS, or what-have-you.