{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
        // mapping is not ready until `AnalysisHost::apply_changes` has been called.
        // in `SourceRootId`s instead of `FileId`s and `FileId` -> `SourceRootId`
        let mut modified_ratoml_files: FxHashMap<FileId, (ChangeKind, vfs::VfsPath)> =