Convert code to utility or extension method
Is it possible to simplifing this piece of code with some static utility or extension method?

cachedDisplayInitialPinCodeSequence
.SetAutoKill(false)
.OnKill(() => cachedDisplayInitialPinCodeSequence = null);
cachedShowCorrectValidationStatusSequence
.SetAutoKill(false)
.OnKill(() => cachedShowCorrectValidationStatusSequence = null);