function _openCdpForCallback(bytes memory data) internal override {
    if (zapFeeBPS > 0) {
        OpenCdpForOperation memory flData = abi.decode(data, (OpenCdpForOperation));

        bytes32 _cdpId = borrowerOperations.openCdpFor(
            flData.eBTCToMint,
            flData._upperHint,
            flData._lowerHint,
            flData.stETHToDeposit,
            flData.borrower
        );

        IERC20(address(ebtcToken)).safeTransfer(zapFeeReceiver, flData.eBTCToMint * zapFeeBPS / BPS);
    } else {
        super._openCdpForCallback(data);
    }
}
