How to automatically extract m files from prj file?

I have many prj files that I want to automatically read and extract the code from. I know this must be possible because I can open the prj file in Matlab and see the list of code under "Shared Resources and Helper Files". From there I can right click on the m file and choose open to view the file in the editor.

Any ideas on how I would parse through all these files and save the "Shared Resources and Helper Files"?