slide_hold_slide(
states: Union[State, List[State]],
t_start: float,
t_end: float,
slide_duration: float = 0.1,
entrance_point: Point2D = Point2D(x=50.0, y=0.0),
exit_point: Point2D = Point2D(x=-50.0, y=0.0),
entrance_effect: SlideEffect = <SlideEffect.NONE: 'none'>,
exit_effect: SlideEffect = <SlideEffect.NONE: 'none'>,
entrance_easing_dict: Optional[Dict[str, Callable[[float], float]]] = None,
exit_easing_dict: Optional[Dict[str, Callable[[float], float]]] = None
) -> Union[List[KeyState], List[List[KeyState]]]