code: private void initShowAnimation(TypedArray attrs) {
  		int index = R.styleable.ActionButton_show_animation;
  		if (attrs.hasValue(index)) {
  			int animResId = attrs.getResourceId(index, Animations.NONE.animResId);
  			showAnimation = Animations.load(getContext(), animResId);
  			LOGGER.trace("Initialized Action Button show animation");
  		}
  	}
docs: Initializes the animation, which is used while showing
  <b>Action Button</b>
  
  @param attrs attributes of the XML tag that is inflating the view