Not all models have max specified on their index accessor.
Not all models have max specified on their index accessor.

AnalyticalGraphicsInc/cesium,CesiumGS/cesium,progsung/cesium,YonatanKra/cesium,likangning93/cesium,CesiumGS/cesium,likangning93/cesium,progsung/cesium,CesiumGS/cesium,CesiumGS/cesium,likangning93/cesium,AnalyticalGraphicsInc/cesium,likangning93/cesium,YonatanKra/cesium,YonatanKra/cesium,CesiumGS/cesium,likangning93/cesium,YonatanKra/cesium