syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match self.source_file_by_stable_id(stable_id) {
context_before:         let stable_id = StableSourceFileId::from_filename_in_current_crate(&filename);
context_after:             Some(lrc_sf) => Ok(lrc_sf),