sampleTerrainAsync

external fun sampleTerrainAsync(terrainProvider: TerrainProvider, level: Int, positions: ERROR CLASS: Symbol not found for ReadonlyArray<cesium/engine/Cartographic>, rejectOnTileFail: Boolean? = definedExternally): ERROR CLASS: Symbol not found for Promise<ERROR CLASS: Symbol not found for ReadonlyArray<cesium/engine/Cartographic>>(source)