Safegaurd against forgetting to supply a single category as an array.
Safegaurd against forgetting to supply a single category as an array.

likangning93/cesium,geoscan/cesium,oterral/cesium,omh1280/cesium,denverpierce/cesium,emackey/cesium,kaktus40/cesium,aelatgt/cesium,soceur/cesium,jason-crow/cesium,CesiumGS/cesium,likangning93/cesium,esraerik/cesium,wallw-bits/cesium,ggetz/cesium,soceur/cesium,wallw-bits/cesium,AnimatedRNG/cesium,hodbauer/cesium,ggetz/cesium,omh1280/cesium,CesiumGS/cesium,kiselev-dv/cesium,YonatanKra/cesium,AnalyticalGraphicsInc/cesium,AnalyticalGraphicsInc/cesium,wallw-bits/cesium,likangning93/cesium,jason-crow/cesium,esraerik/cesium,omh1280/cesium,hodbauer/cesium,wallw-bits/cesium,oterral/cesium,esraerik/cesium,denverpierce/cesium,kiselev-dv/cesium,aelatgt/cesium,geoscan/cesium,aelatgt/cesium,jasonbeverage/cesium,NaderCHASER/cesium,YonatanKra/cesium,soceur/cesium,esraerik/cesium,CesiumGS/cesium,AnimatedRNG/cesium,jason-crow/cesium,kaktus40/cesium,aelatgt/cesium,AnimatedRNG/cesium,CesiumGS/cesium,NaderCHASER/cesium,CesiumGS/cesium,omh1280/cesium,YonatanKra/cesium,likangning93/cesium,progsung/cesium,likangning93/cesium,AnimatedRNG/cesium,josh-bernstein/cesium,denverpierce/cesium,jason-crow/cesium,kiselev-dv/cesium,josh-bernstein/cesium,ggetz/cesium,kiselev-dv/cesium,ggetz/cesium,denverpierce/cesium,emackey/cesium,jasonbeverage/cesium,progsung/cesium,hodbauer/cesium,YonatanKra/cesium,emackey/cesium,emackey/cesium,oterral/cesium,NaderCHASER/cesium