ButtonState<T, A>: _pressEv: _pressRepeatEv: _downEv: _releaseEv: _arg?: pressed: Set<T> pressedRepeat: Set<T> released: Set<T> down: Set<T> update(): void process(state: AppState ): void press(btn: T , state: AppState ): void pressRepeat(btn: T , state: AppState ): void release(btn: T , state: AppState ): void