{"ast_node_type":"variable","tokens":[{"end":134,"kind":"keyword","start":0,"text":"let"}]}
                            let expr_field = previous_non_trivia_token(token.clone())?.parent().and_then(ast::RecordExprField::cast)?;
                            cov_mark::hit!(expected_type_struct_field_followed_by_comma);
                            let (_, _, ty) = sema.resolve_record_field(&expr_field)?;