{"ast_node_type":"variable","tokens":[{"end":36,"kind":"keyword","start":0,"text":"let"}]}
            let expr_id = source_map
            let expr_ast = name_ref.syntax().ancestors().find_map(ast::Expr::cast).unwrap();
                .node_expr(InFile { file_id: editioned_file_id.into(), value: &expr_ast })