constructor() {
    /**
     * @export {!Array<!ee.data.AlgorithmArgument>}
     */
    this.args;

    /**
     * @export {string}
     */
    this.returns;

    /**
     * @export {string}
     */
    this.description;

    /**
     * @export {string|undefined}
     */
    this.deprecated;

    /**
     * @export {boolean|undefined}
     */
    this.preview;

    /**
     * @export {string|undefined}
     */
    this.sourceCodeUri;
  }
The signature of an algorithm.
@record @struct