{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"check_byte_string_value(r\"foobar\","}]}
        check_byte_string_value(r"foobar", b"foobar");
    fn test_byte_string_escape() {
        check_byte_string_value(r"\foobar", None::<&[u8; 0]>);