import { INewslettersSchedulerRequestOptions } from "../types";
/**
 * return a token created using options.authentication or set on options.token
 *
 * @export
 * @param {INewslettersSchedulerRequestOptions} options
 * @return {*}  {Promise<string>}
 */
export declare function authenticateRequest(options: INewslettersSchedulerRequestOptions): Promise<string>;
