code: private void notifyOnScrollingDown(@NonNull final View animatedView, final int scrollPosition) {
          for (HideViewOnScrollAnimationListener listener : listeners) {
              listener.onScrollingDown(this, animatedView, scrollPosition);
          }
      }
docs: Notifies all listeners, which have been registered to be notified about the animation's
  internal state, when the observed list view is scrolling downwards.
  
  @param animatedView
  The view, which is animated by the observed animation, as an instance of the class
  {@link View}
  @param scrollPosition
  The current scroll position of the list view's first item in pixels as an {@link
  Integer} value