Ways to synchronize interface and implementation comments in C# [closed]

Answer 1

I built a library to post-process the XML documentation files to add support for the tag.

While it doesn't help with Intellisense in source code, it does allow the modified XML documentation files to be included in a NuGet package and therefore works with Intellisense in referenced NuGet packages.

More info at www.inheritdoc.io (free version available).