code: @SuppressWarnings({"MethodMayBeStatic", "UnusedParameters"})
      @NonNull
      protected Animator[] getAdditionalAnimators(@NonNull final View view, @NonNull final ViewGroup parent) {
          return new Animator[]{};
      }
docs: Override this method to provide additional animators on top of the default height and alpha animation.
  
  @param view   The {@link android.view.View} that will get animated.
  @param parent The parent that this view will eventually be attached to.
  
  @return a non-null array of Animators.