docs: def animation(frame_function: types.FrameFunction) -> types.Animation:
      """Turn a FrameFunction into an Animation.
  
      Args:
          frame_function: A function that returns a FrameGenerator.
  
      Returns:
          an Animation decorator function.
      """
      animation_ = core.Animation(frame_function)
  
      @functools.wraps(frame_function)
      def wrapper(*args, **kwargs):
          return animation_(*args, **kwargs)
  
      return wrapper