async function start() {
    logger.info('Starting Nextcloud Talk service');
    const tokens = await gladys.variable.getVariables('NEXTCLOUD_TALK_TOKEN', serviceId);

    if (!tokens || tokens.length === 0) {
      throw new ServiceNotConfiguredError('No Nextcloud token found. Not starting Nextcloud Talk service');
    }
    await messageHandler.connect(tokens);
  }
@public
@description This function starts the Nextcloud Talk Service.
@example
gladys.services.nextcloudTalk.start();