public BreweryDTO UpdateBrewery(Guid id, BreweryDTO breweryDto)
        {
            var brewery = this.context.Breweries
                .Where(b => b.IsDeleted == false)
                .FirstOrDefault(b => b.Id == breweryDto.Id) ?? throw new ArgumentNullException();

            if (this.context.Breweries.Any(b => b.Name == breweryDto.Name && b.Id != id))
            {
                throw new InvalidOperationException();
            }
            if (!this.context.Countries.Any(c => c.Name == breweryDto.CountryName))
            {
                throw new InvalidOperationException(); //no such country
            }

            //brewery = breweryDto.GetEntity();
            brewery.Name = breweryDto.Name;
            brewery.CountryId = this.countryService.GetId(breweryDto.CountryName);
            brewery.UpdatedOn = this.dateTimeProvider.GetDateTime();

            this.context.Breweries.Update(brewery);
            this.context.SaveChanges();

            return breweryDto;
        }