public void EditAddress(string personFirstName, string personLastname, string street, string postalCode, string city)
        {
            using (var container = Db4oEmbedded.OpenFile(Resources.Database))
            {
                var person = container.Query<Person>().FirstOrDefault(x => x.Firstname == personFirstName && x.Lastname == personLastname);

                if (person?.Address == null) return;
                if (!string.IsNullOrEmpty(street)) person.Address.Street = street;
                if (!string.IsNullOrEmpty(postalCode)) person.Address.PostalCode = postalCode;
                if (!string.IsNullOrEmpty(city)) person.Address.City = city;

                container.Store(person.Address);
                container.Commit();
            }
        }