async function getConfiguration() {
  logger.debug('Loading Netatmo configuration...');
  const { serviceId } = this;
  try {
    this.configuration.clientId = await this.gladys.variable.getValue(GLADYS_VARIABLES.CLIENT_ID, serviceId);
    this.configuration.clientSecret = await this.gladys.variable.getValue(GLADYS_VARIABLES.CLIENT_SECRET, serviceId);
    this.configuration.energyApi =
      (await this.gladys.variable.getValue(GLADYS_VARIABLES.ENERGY_API, serviceId)) === '1';
    this.configuration.weatherApi =
      (await this.gladys.variable.getValue(GLADYS_VARIABLES.WEATHER_API, serviceId)) === '1';
    logger.debug(`Netatmo configuration get: clientId='${this.configuration.clientId}'`);
    return this.configuration;
  } catch (e) {
    this.saveStatus({ statusType: STATUS.NOT_INITIALIZED, message: null });
    throw new ServiceNotConfiguredError('Netatmo is not configured.');
  }
}
@description Loads Netatmo stored configuration.
@returns {Promise} Netatmo configuration.
@example
await getConfiguration();