private SliderAdapter getRealAdapter(){
        PagerAdapter adapter = mViewPager.getAdapter();
        if(adapter!=null){
            return ((InfinitePagerAdapter)adapter).getRealAdapter();
        }
        return null;
    }
get the {@link com.daimajia.slider.library.Indicators.PagerIndicator} instance.
You can manipulate the properties of the indicator.
@return
library/src/main/java/com/daimajia/slider/library/SliderLayout.java