    function _ethPrice() private view returns (int256) {
        (, int256 answer, , , ) = _ethOracle.latestRoundData();
        return answer;
    }
...
    function getPriceUSD(address asset) public view override returns (uint256) {
        address feed = feeds[asset];
        require(feed != address(0), Error.ASSET_NOT_SUPPORTED);

        (, int256 answer, , uint256 updatedAt, ) = AggregatorV2V3Interface(feed).latestRoundData();

        require(block.timestamp <= updatedAt + stalePriceDelay, Error.STALE_PRICE);
        require(answer >= 0, Error.NEGATIVE_PRICE);

        uint256 price = uint256(answer);
        uint8 decimals = AggregatorV2V3Interface(feed).decimals();
        return price.scaleFrom(decimals);
    }
    function _ethPrice() private view returns (int256) {
        (uint80 roundID, int256 answer, , uint256 timestamp, uint80 answeredInRound) = _ethOracle.latestRoundData();
        require(answeredInRound >= roundID, "Stale price");
        require(timestamp != 0,"Round not complete");
        require(answer > 0,"Chainlink answer reporting 0");
        return answer;
    }
...
    function getPriceUSD(address asset) public view override returns (uint256) {
        address feed = feeds[asset];
        require(feed != address(0), Error.ASSET_NOT_SUPPORTED);
        (uint80 roundID, int256 answer, , uint256 updatedAt, uint80 answeredInRound) = AggregatorV2V3Interface(feed).latestRoundData();
        require(answeredInRound >= roundID, "Stale price");
        require(answer > 0," Error.NEGATIVE_PRICE");
        require(block.timestamp <= updatedAt + stalePriceDelay, Error.STALE_PRICE);

        uint256 price = uint256(answer);
        uint8 decimals = AggregatorV2V3Interface(feed).decimals();
        return price.scaleFrom(decimals);
    }
