async readTokens(customerId = '') {
    if (customerId) {
      return this.request.get(`/customer/${customerId}/tokens`);
    }
    return this.request.get('/tokens');
  }
/**
   * List all tokens of a customer.
   *
   * @see https://docs.fastly.com/api/auth#tokens_d59ff8612bae27a2317278abb048db0c
   * @param {string} [customerId] - The id of the customer.
   * @returns {Promise} The response object representing the completion or failure.
   */
List all tokens of a customer.
List all tokens of a customer .
async readTokens(customerId = '') {
    if (customerId) {
      return this.request.get(`/customer/${customerId}/tokens`);
    }
    return this.request.get('/tokens');
  }
async readTokens ( customerId = '' ) { if ( customerId ) { return this . request . get ( ` ${ customerId } ` ) ; } return this . request . get ( '/tokens' ) ; }
List all tokens of a customer.
List all tokens of a customer .