//FTCHook::onDecreasePosition

    function onDecreasePosition(
        address _primaryAccount,
        uint256,
        uint256,
        uint256 _sizeDelta,
        bytes32
    ) external onlyWhitelistedCaller {
        // Do nothing
    }
Initial collateral = 100,000 usdc
1st trade opening position trading fee = 100,000 - 100 = 99900
1st trade opening position execution fee = 99900 - 0.1 = 99899.9
2nd trade closing position trading fee = 99899.9 - 100 = 99799.9
2nd trade closing position execution fee = 99799.9 - 0.1 = 99799.8
//FTCHook::onDecreasePosition

    function onDecreasePosition(
        address _primaryAccount,
        uint256,
        uint256,
        uint256 _sizeDelta,
        bytes32
    ) external onlyWhitelistedCaller {
        // Do nothing
    }
