getRequestUrl(options = {}) {
    const { params, url } = options;

    return `${url}?${this.serialize(params)}`;
  }
Returns the request URL for the custom address provider.
@param {object} options - The options for the request.
@param {object} options.params - The parameters for the request.
@param {string} options.url - The URL for the request.
@returns {string} The request URL.