public static Registration ToEntity(this RegistrationModel instance)
        {
            if (instance.IsNull())
            {
                return(null);
            }

            return(new Registration
            {
                Aerials = instance.Aerials,
                Classes = instance.Classes.ToListIfNotNull(),
                FirstName = instance.FirstName,
                Email = instance.Email,
                PaymentStatus = instance.PaymentStatus,
                Surname = instance.Surname,
                AerialsPartner = instance.AerialsPartner,
                AerialsTeachers = instance.AerialsTeachers,
                Amount = instance.Amount,
                Balboa = instance.Balboa,
                BalboaLevel = instance.BalboaLevel,
                BalboaPartner = instance.BalboaPartner,
                BluesLevel = instance.BluesLevel,
                City = instance.City,
                CountryOfResidence = instance.CountryOfResidence,
                Id = instance.Id,
                DanceRole = instance.DanceRole,
                EmergencyContactNumber = instance.EmergencyContactNumber,
                RegistationId = instance.RegistationId,
                EmergencyContactPerson = instance.EmergencyContactPerson,
                Events = instance.Events.ToListIfNotNull(),
                FullPass = instance.FullPass,
                Hellzapoppin = instance.Hellzapoppin,
                HellzapoppinPartner = instance.HellzapoppinPartner,
                JackAndJill = instance.JackAndJill,
                LindyLevel = instance.LindyLevel,
                Novice = instance.Novice,
                NovicePartner = instance.NovicePartner,
                Over18 = instance.Over18,
                PerformAtGrammy = instance.PerformAtGrammy,
                PhoneNumber = instance.PhoneNumber,
                ShowcaseCouple = instance.ShowcaseCouple,
                ShowcaseCouplePartner = instance.ShowcaseCouplePartner,
                ShowcaseTeam = instance.ShowcaseTeam,
                ShowcaseTeamPartner = instance.ShowcaseTeamPartner,
                SoloJazz = instance.SoloJazz,
                StrictlyLindy = instance.StrictlyLindy,
                StrictlyLindyPartner = instance.StrictlyLindyPartner,
                TermsAndConditions = instance.TermsAndConditions
            });
        }