```\n    function _onlyCalmPeriods() private view {\n        int24 tick = currentTick();\n        int56 twapTick = twap();\n\n        if(\n            twapTick - maxTickDeviationNegative > tick  ||\n            twapTick + maxTickDeviationPositive < tick) revert NotCalm();\n    }\n```\n