Rather than doing `getattr(self, "csv_post_process", None)` in `views.py` I'd rather explicitly set `csv_post_process = False` as a default value at the top of the mixin (just like `allow_newlines`) and then a) you can just access `self.csv_post_process` directly here, and b) it also makes it more obvious to users of the mixin that it's an option.