private AirQualityStandard Save(AirQualityStandard standard, long measurementItemId)
 {
     if (_connection.Get.Insert(AirQualityStandardEntity.FromDomain(standard, measurementItemId)) > 0)
     {
         return(standard.WithId(_connection.LastIndex));
     }
     return(null);
 }
 public static AirQualityStandardEntity FromDomain(AirQualityStandard standard, long measurementItemRef)
 => new AirQualityStandardEntity(standard.Id,
                                 standard.Name,
                                 standard.Pollutant,
                                 standard.Limit,
                                 standard.Percent,
                                 standard.Averaging,
                                 measurementItemRef);
 internal static AirQualityStandard FromApi(ApiAirQualityStandard standard)
 => AirQualityStandard.Create(standard.Name,
                              standard.Pollutant,
                              standard.Limit,
                              standard.Percent,
                              standard.Averaging);