code: public SnackBar actionRipple(int resId){
  		if(resId != 0)
              ViewUtil.setBackground(mAction, new RippleDrawable.Builder(getContext(), resId).build());
  		return this;
  	}
docs: Set the style of RippleEffect of the ActionButton.
  @param resId The resourceId of RippleEffect.
  @return This SnackBar for chaining methods.