Solution with a subclass does not work ( in the ios 10 no more ivar firstItem, secondItem).
In the pull request, I implemented another more complicated solution. It works correctly on all operating system versions. I also added integration tests on the transfer of outlets. I hope you are satisfied with this solution, unfortunately more elegant and working solution could not be found. Even with the use swizzle (these solutions also tried).
Solution with a subclass does not work ( in the ios 10 no more ivar firstItem, secondItem). In the pull request, I implemented another more complicated solution. It works correctly on all operating system versions. I also added integration tests on the transfer of outlets. I hope you are satisfied with this solution, unfortunately more elegant and working solution could not be found. Even with the use swizzle (these solutions also tried).