var datasource = Cesium.KmlDataSource.load('http://localhost:8090/iserver/services/data-kaogu/rest/data/datasources/kaogu/datasets/Region/features.kml', {
camera: viewer.scene.camera,
canvas: viewer.scene.canvas,
clampToGround: true
}).then(function(dataSource){
viewer.dataSources.add(dataSource);
})
有三层这样的数据加载到场景中,用viewer.selectedEntity.name能够取到对应的id,但是无法分辨是哪一层的,请问有什么方法能区分吗