let promise=SuperMap3D.GeoJsonDataSource.load('../../SampleData/ne_10m_us_states.topojson', {
stroke: SuperMap3D.Color.HOTPINK,
fill: SuperMap3D.Color.PINK,
strokeWidth: 3,
markerSymbol: '?'
})
promise.then((dataSource)=>{
viewer.dataSources.add(dataSource);
viewer.flyTo(dataSource.entities.values) //此方法会报错
)