syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"files.stable_id_to_source_file.insert(file_id,"}]}
source_snippet:         files.stable_id_to_source_file.insert(file_id, Arc::clone(&file));
context_before:         files.source_files.push(Arc::clone(&file));