function _getAuraSpot() internal view returns (uint256 price) {
  uint256 ethPrice;
  (, int256 answer, , , ) = AggregatorV3Interface(ETH_CHAINLINK_FEED).latestRoundData();
  ethPrice = wdiv(uint256(answer), ETH_CHAINLINK_DECIMALS);

  IPriceOracle.OracleAverageQuery[] memory queries = new IPriceOracle.OracleAverageQuery[](1);
  queries[0] = IPriceOracle.OracleAverageQuery(IPriceOracle.Variable.PAIR_PRICE, 1800, 0);
  uint256[] memory results = IPriceOracle(auraPriceOracle).getTimeWeightedAverage(queries);

  price = wmul(results[0], ethPrice);
}
