```\n/\*\*\n \* @dev Calculates the USD price of asset.\n \* @param \_asset: the asset address.\n \* Returns the USD price of the given asset\n \*/\nfunction \_getUSDPrice(address \_asset) internal view returns (uint256 price) {\n require(usdPriceFeeds[\_asset] != address(0), Errors.ORACLE\_NONE\_PRICE\_FEED);\n\n (, int256 latestPrice, , , ) = AggregatorV3Interface(usdPriceFeeds[\_asset]).latestRoundData();\n\n price = uint256(latestPrice);\n}\n```\n