IssueTracker

There are a variety of use cases in which a number of lists may need to be concatenated in a specific order.
Different parts of this lists may be hidden/shown based on different conditions (e.g. I don't want to show a list that contains a visible header, if there are no other elements in it)
When adding the adapter again to the ConcatAdapter I wanna make sure that it is at the correct position. For that it would be really useful if the ConcatAdapter had a sort function where one could enter a comparator by which to sort the adapters to bring them back into the right order instead of removing all and entering all in the right order.