code: private void animateViewIfNecessary(final int position, @NonNull final View view, @NonNull final ViewGroup parent) {
          Animator[] childAnimators;
          if (getDecoratedBaseAdapter() instanceof AnimationAdapter) {
              childAnimators = ((AnimationAdapter) getDecoratedBaseAdapter()).getAnimators(parent, view);
          } else {
              childAnimators = new Animator[0];
          }
          Animator alphaAnimator = ObjectAnimator.ofFloat(view, ALPHA, 0, 1);
  
          assert mViewAnimator != null;
          mViewAnimator.animateViewIfNecessary(position, view, AnimatorUtil.concatAnimators(childAnimators, new Animator[0], alphaAnimator));
      }
docs: Animates given View if necessary.
  
  @param position the position of the item the View represents.
  @param view     the View that should be animated.
  @param parent   the parent the View is hosted in.