protected void deserialize(BaseItemUnderTwo from, List <PropertyNames> changedProperties)
        {
            if (changedProperties != null)
            {
                if (SecondUpperIdentifier != from.SecondUpperIdentifier)
                {
                    changedProperties.Add(PropertyNames.SecondUpperIdentifier);
                }
            }

            SecondUpperIdentifier = from.SecondUpperIdentifier;
        }
 protected void serialize(BaseItemUnderTwo into, int offset)
 {
     into.SecondUpperIdentifier = SecondUpperIdentifier;
 }