async function disconnect() {
  try {
    // Disconnect from Gladys Gateway
    this.gladysGatewayClient.disconnect();
    this.connected = false;
    // Delete all variables related to the Gateway
    await this.variable.destroy('GLADYS_GATEWAY_REFRESH_TOKEN');
    await this.variable.destroy('GLADYS_GATEWAY_RSA_PRIVATE_KEY');
    await this.variable.destroy('GLADYS_GATEWAY_ECDSA_PRIVATE_KEY');
    await this.variable.destroy('GLADYS_GATEWAY_RSA_PUBLIC_KEY');
    await this.variable.destroy('GLADYS_GATEWAY_ECDSA_PUBLIC_KEY');
    await this.variable.destroy('GLADYS_GATEWAY_BACKUP_KEY');
    await this.variable.destroy('GLADYS_GATEWAY_USERS_KEYS');
  } catch (e) {
    logger.debug(e);
    this.connected = false;
  }
}
@description Disconnect Gladys Gateway.
@example
disconnect();