I have a view controller (let's call it Parent) whose view has two other embedded view controllers. One of these embedded VCs is a table view controller, so when the user scrolls that, it should behave like other scroll views in the app/system. However, in iOS 11, when I add a search controller to Parent's `navigationItem` and set `hidesSearchBarWhenScrolling` to `true`, I get no effect. I'm guessing that's because Parent's view is not a scroll view, and I'm wondering whether:
a) there is a way to tie the hiding/showing behaviour of the search bar to a specific scroll view, or
b) there is a way to manually hide/show the search bar.
Thanks!
