setUrls(urls) {
    this.urls = urls;
    const key = urls.join('\n');
    this.setTileUrlFunction(
      createFromTileUrlFunctions(
        urls.map(this.createFromWMTSTemplate.bind(this)),
      ),
      key,
    );
  }
Set the URLs to use for requests.
URLs may contain OGC conform URL Template Variables: {TileMatrix}, {TileRow}, {TileCol}.
@param {Array<string>} urls URLs.
@override