transform length = struct {
	.len <- uint8;
};

transform pascal_string = struct {
	<- length;
	.string <- ascii <- known_length(.len);
};

transform item(first_len, second_len) = struct {
	.id <- uint32le <- known_length(4); # the known_length is unnecessary
	.name <- pascal_string;
	.first <- known_length(first_len);
	.second <- known_length(second_len);
};

transform main() = item(3, 0);