iPadOS Multiwindow Sample Code Beyond Basic "clone" of the same window

I see there is a sample project here "Supporting Multiple Windows on iPad."


This sample seems to just have a basic "duplicate" instance of the same app window. Is there a more advanced sample project showing all the different types of windows you can make (auxiliary windows, ect.) and enabling 'close' when you slide the window down to the bottom? In the sample project the window just pops back up.