Enhancement Request: Marker Comment to prevent Migration

[codeworrior]

In some special cases, the generic rules used by the migration tooling might not be suitable and a developer might decide to revert a migration step done by the tooling.

In that case, it would be helpful for a repeated usage of the tooling, if the corresponding code location could be marked as 'don't touch'. It might however be tricky to express what shouldn'T be touched

• what exact part of the code shouldn't be touched (e.g. only part of a line or a range starting somewhere in one line and continuing to some other line)
• what change should not be applied? How to prevent that new migration rules are also blocked by old comments