当我使用codeception(_support/AcceptanceHelper.php)生成的AcceptanceHelper时，如何访问Actor/AcceptanceTester($I)。我如何从StepObjects访问我的函数？我有:接受/_steps/MyStepObject.phpnamespaceAcceptanceTester;classMyStepObjectextends\AcceptanceTester{publicfunctiondeleteCookies(){$I=$this;$I->amGoingTo("deleteallcookies...");$I-