public PagerIndicator.IndicatorVisibility getIndicatorVisibility(){
        if(mIndicator == null){
            return mIndicator.getIndicatorVisibility();
        }
        return PagerIndicator.IndicatorVisibility.Invisible;

    }
Set the visibility of the indicators.
@param visibility
library/src/main/java/com/daimajia/slider/library/SliderLayout.java