public static MeasurementStandardEntity FromDomain(MeasurementStandard domain)
 => new MeasurementStandardEntity(domain.Id,
                                  domain.Name,
                                  domain.Pollutant.NameCode,
                                  domain.Limit,
                                  domain.Percent,
                                  domain.Averaging);
 public static MeasurementStandardDto FromDomain(MeasurementStandard domain)
 => new MeasurementStandardDto(domain.Id ?? throw new ArgumentException("Id is null"),
 public MeasurementStandard ToDomain()
 => MeasurementStandard.Create(_name, _pollutant, _limit, _percent, _averaging);