{"ast_node_type":"variable","tokens":[{"end":100,"kind":"keyword","start":0,"text":"let"}]}
    let assert_path = cx.path_all(span, true, cx.std_path(assert_path), vec![GenericArg::Type(ty)]);
    let span = cx.with_def_site_ctxt(span);
    stmts.push(cx.stmt_let_type_only(span, cx.ty_path(assert_path)));