async function start() {
    logger.info('Starting Open Weather service');
    openWeatherApiKey = await gladys.variable.getValue(OPENWEATHER_API_KEY, serviceId);
    if (!openWeatherApiKey) {
      throw new ServiceNotConfiguredError('Open Weather Service not configured');
    }
  }
@public
@description This function starts the service.
@example
gladys.services.openWeather.start();