    function initialize(uint256 strike, uint256 maturity, uint160 rate) external override noDelegateCall {
        if (maturity < blockTimestamp(0)) Error.alreadyMatured(maturity, blockTimestamp(0));
        ...
    }
    ...
    function check(TimeswapV2PoolMintParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity < blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2PoolBurnParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity < blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2PoolDeleverageParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity < blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2PoolLeverageParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity < blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2PoolRebalanceParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity < blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }
    function check(TimeswapV2OptionMintParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity <= blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2OptionBurnParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity <= blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2OptionSwapParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity <= blockTimestamp) Error.alreadyMatured(param.maturity, blockTimestamp);
        ...
    }

    ...
    function check(TimeswapV2OptionCollectParam memory param, uint96 blockTimestamp) internal pure {
        ...
        if (param.maturity > blockTimestamp) Error.stillActive(param.maturity, blockTimestamp);
        ...
    }
