Version Used: 15.5.5

Steps to Reproduce:

enum Some {
   First,
   Second
}

Expected Behavior:
I have an .editorconfig option to force developer to add comma after Second. It's useful, because it allows easy copy/paste and reordering member, and most important, when somebody else will add Third member, line with "Second" won't be changed and won't appear in comparsions.

Actual Behavior:
I have no way to force to add trailing comma.

P.S. Sorry for my English not being 100% sharp.