How to keep Migration Assistant from overwriting existing files on a new Mac

The Mac has a great app called Migration Assistant that is very helpful when setting up a new Mac and you need to transfer files from an old Mac. Jim O’Reilly asks a great question about using Migration Assistant:
If I use Migration Assistant, how can I avoid writing over on the new Mac files with the same name as the corresponding files from the old Mac?While Migration Assistant is relatively straightforward to use, it does have settings that let you twiddle what’s transferred.Typic