## Summary This was left unfinished in https://github.com/astral-sh/ruff/pull/21167. This is required to fix our disjointness checks with type-of a final class, which is currently broken, and blocking https://github.com/astral-sh/ty/issues/159.
Markdown files within the mdtest/ subdirectory are tests of type inference and type checking;
executed by the tests/mdtest.rs integration test.
See crates/ty_test/README.md for documentation of this test format.