public T getEntryModSkip(int index, T store) {
            int total = data.getTotalObjectSize();
            if (index == -1) {
                index--;
            } else if (index >= total) {
                index++;
            }

            index = mod(index, total);

            return data.get(index, store);
        }
Obtain the default interpolator for the current thread.

@return the pre-existing instance (not null)
jme3-core/src/main/java/com/jme3/anim/interpolator/FrameInterpolator.java