syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"(Some((fn_def_id,"}]}
source_snippet:             (Some((fn_def_id, fn_args)), RtnMode::ForSuggestion) => {
context_before:             }
context_after:                 self.print_def_path(fn_def_id, fn_args)?;