/**
    * @notice When overallCollateralRatio is below badCollateralRatio, borrowers with collateralRatio below 125% could be fully liquidated.
    * Emits a `LiquidationRecord` event.
    *
    * Requirements:
    * - Current overallCollateralRatio should be below badCollateralRatio
    * - `onBehalfOf`collateralRatio should be below 125%
    * @dev After Liquidation, borrower's debt is reduced by collateralAmount * etherPrice, deposit is reduced by collateralAmount * borrower's collateralRatio. Keeper gets a liquidation reward of `keeperRatio / borrower's collateralRatio
    */
function superLiquidation(address provider, address onBehalfOf, uint256 assetAmount) external virtual {
    uint256 assetPrice = getAssetPrice();
    require((totalDepositedAsset * assetPrice * 100) / poolTotalEUSDCirculation < badCollateralRatio, "overallCollateralRatio should below 150%");
    uint256 onBehalfOfCollateralRatio = (depositedAsset[onBehalfOf] * assetPrice * 100) / borrowed[onBehalfOf];
    require(onBehalfOfCollateralRatio < 125 * 1e18, "borrowers collateralRatio should below 125%");
    require(assetAmount <= depositedAsset[onBehalfOf], "total of collateral can be liquidated at most");
    uint256 eusdAmount = (assetAmount * assetPrice) / 1e18;
    if (onBehalfOfCollateralRatio >= 1e20) {
        eusdAmount = (eusdAmount * 1e20) / onBehalfOfCollateralRatio;
    }
    require(EUSD.allowance(provider, address(this)) >= eusdAmount, "provider should authorize to provide liquidation EUSD");

    _repay(provider, onBehalfOf, eusdAmount);

    totalDepositedAsset -= assetAmount;
    depositedAsset[onBehalfOf] -= assetAmount;
    uint256 reward2keeper;
    if (msg.sender != provider && onBehalfOfCollateralRatio >= 1e20 + configurator.vaultKeeperRatio(address(this)) * 1e18) {
        reward2keeper = ((assetAmount * configurator.vaultKeeperRatio(address(this))) * 1e18) / onBehalfOfCollateralRatio;
        collateralAsset.transfer(msg.sender, reward2keeper);
    }
    collateralAsset.transfer(provider, assetAmount - reward2keeper);

    emit LiquidationRecord(provider, msg.sender, onBehalfOf, eusdAmount, assetAmount, reward2keeper, true, block.timestamp);
}
