Разбирался с кодом подопечных, понадобилось заглянуть внутрь регионов.
И тут такое дело:

    public abstract class Record : DomainObject
    {
            #region Fields
            ...
            #endregion

            #region Constructor
            /// <summary>
            /// Конструктор
            /// </summary>
            protected void Initialise()
            {
                record.activity = new ActivityEntity();
                record.balanceOfPaymentItem = new PaymentBalanceItemEntity();
                record.createUser = new UserEntity();
                record.currency = new CurrencyEntity();
                record.executor = new UserEntity();
                record.extensions = new RecordExtansionsEntity();
                record.groupMaterial = new MaterialGroupEntity();
                record.material = new MaterialEntity();
                record.railway = new RailwayEntity();
                record.services = new RecordServicesEntity();
                record.supplier = new SupplierEntity[0];
                record.unit = new UnitEntity();
                record.updateUser = new UserEntity();
            }
            #endregion

            #region Properties
            ...
    }