openlayers包与supermap的iclient-ol包的版本匹配，来自TileLayer的source的state属性的值为true，但网页报错Uncaught (in promise) TypeError: source.getState is not a function
at VectorTileLayer.handleSourcePropertyChange_ (chunk-CKUMQJDI.js?v=572dae80:466:18)
at VectorTileLayer.dispatchEvent (chunk-ASKVX2KB.js?v=572dae80:364:22)
at VectorTileLayer.notify (chunk-ASKVX2KB.js?v=572dae80:618:12)
at VectorTileLayer.set (chunk-ASKVX2KB.js?v=572dae80:654:14)
at VectorTileLayer.setSource (chunk-CKUMQJDI.js?v=572dae80:653:10)
at new Layer (chunk-CKUMQJDI.js?v=572dae80:393:10)
at new BaseVectorLayer (chunk-FQEAHC6T.js?v=572dae80:1883:5)
at new VectorTileLayer (chunk-FQEAHC6T.js?v=572dae80:12805:5)
at Network.vue:193:33
请问是否是因为 SuperMap 自定义的图层源可能未完全实现 OpenLayers 的 Source 标准接口？
若不是，可能是什么原因？
