Please let me know if my thinking is wrong on this line... since this is an instance method on `RubyArray`, which has a native `each`, this is always true and so can totally be deleted.  Correct?

Let me know if I'm missing something... if we do want to call into RubyEnumerable here, I can restore this line (though it will need a switch on Ruby version to decide what arity the any block should use)