constructor() {
    /**
     * The download format, one of either "CSV" or "JSON."
     * @export {string}
     */
    this.format;

    /**
     * A comma separated string of selectors that can be used to determine which
     * attributes will be downloaded.
     * @export {string}
     */
    this.selectors;

    /**
     * The name of the file that will be downloaded.
     * @export {string}
     */
    this.filename;
  }
An object containing table download options.
@record @struct