Implementing a FixItHint which indicates that code needs reformatting but not changing.
This is achieved by creating a FixItHint where the RemoveRange is equal to the InsertFromRange.
This means any dependent clients wont need updating as that is essentially a no-op. For clients that (are updated to) handle it, it signifies that code needs reformatting.
Currently this has been added to clang-tidy but for any refactoring tool that uses the Replacements its rather trivial to include support.
Generally this should be tacked onto other fix-its that maybe span multiple lines or insert/remove braces.