_Originally posted by @jcouv in https://github.com/dotnet/roslyn/pull/62783#discussion_r932720009_ [jcouv:] start on branch `explicitly-scoped`, but need to wait for https://github.com/dotnet/roslyn/pull/62783 (`[UnscopedRef]`) and https://github.com/dotnet/roslyn/pull/62778 (treat `ref RefStruct` as implicitly-scoped). Relates to test plan https://github.com/dotnet/roslyn/issues/59194