public static void DbLoad(this TEvent entity, DbSession session, params PDMDbProperty[] fields)
        {
            var result = entity.DbSelect(session, fields);

            if (fields.Contains(TEventProperties.AreaId))
            {
                entity.AreaId = result.AreaId;
            }
            if (fields.Contains(TEventProperties.Occurrence))
            {
                entity.Occurrence = result.Occurrence;
            }
        }