    function latestRoundData() external view returns (uint80, int256, uint256, uint256, uint80) {
        return (0, latestAnswer(), 0, 0, 0);
    }
(, int256 price, , uint256 updatedAt, ) = priceFeed.latestRoundData();

if (updatedAt < block.timestamp - 60 * 60 /* 1 hour */) {
   revert("stale price feed");
}
