There was already an issue (
CSV-266) requesting this. It was closed because the use case could be solved otherwise.
I have a different use case that needs a list of items in a record. There are only inefficient ways to get this list (e.g. convert the iterator back to a list). The toList() method should really be public since it's the most efficient way to get a list if entries. And there's even a comment on it saying "TODO: Maybe make this public?"