This won't work as `wait_for_apps_visible()` is not in this class, it's in `DeveloperSubmissions`, but I question whether this method should be coupled with the `DeveloperSubmissions` page. I assumed that this `Paginator` class was meant to support other pages too, based on where it is located in the package. If that is not the case then maybe it should be moved and more tightly coupled with `DeveloperSubmissions`.