syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"debug!(\"start_index=`{:?}`,"}]}
source_snippet:         debug!("start_index=`{:?}`, end_index=`{:?}`", start_index, end_index);
context_before:         let end_index = local_end.pos.to_usize();