{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"file_index_to_stable_id:"}]}
    file_index_to_stable_id: &'a FxHashMap<SourceFileIndex, EncodedSourceFileId>,
    file_index_to_file: &'a Lock<FxHashMap<SourceFileIndex, Arc<SourceFile>>>,
    alloc_decoding_session: AllocDecodingSession<'a>,