{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"s.required_source_files.as_mut().expect(\"Already"}]}
                s.required_source_files.as_mut().expect("Already encoded SourceMap!");
            let source_files =
            let (metadata_index, _) = source_files.insert_full(source_file_index);