Not recommended as this event is handled internally.
What are you trying to do?
I needed to track changes in multi-line text.
But I realized in time that for several lines the Enter button in the IME works like a line feed and the HandleAction event does not occur.
So, you need to track the change at the level of the TextChanged event of the text field.
But anyway, thank you very much for your answer, dear Mr. Erel!