How to use the netlify-cms-lib-util.getAllResponses function in netlify-cms-lib-util

async requestAllPages(url: string, options: Options = {}) {
    // overriding classes can return a promise from requestHeaders
    const headers = await this.requestHeaders(options.headers || {});
    const processedURL = this.urlFor(url, options);
    const allResponses = await getAllResponses(processedURL, { ...options, headers });
    const pages: T[][] = await Promise.all(
      allResponses.map((res: Response) => this.parseResponse(res)),
    );
    return ([] as T[]).concat(...pages);
  }