private static VmPhone CreateVm(ServiceChargeTypeEnum?serviceChargeType, PhoneNumberTypeEnum?phoneNumberType, LanguageCode?languageCode) { return(new VmPhone { ChargeDescription = "description", Number = "456789", DialCode = new VmDialCode() { Id = new Guid() }, AdditionalInformation = "info", ChargeType = serviceChargeType?.ToString().GetGuid() ?? Guid.Empty, TypeId = phoneNumberType?.ToString().GetGuid() ?? Guid.Empty, LanguageId = languageCode?.ToString().GetGuid() ?? Guid.Empty }); }