| Class | Description | 
|---|---|
| IdentityCopier<T> | Copierimplementation that simply returns the value passed in, doing in fact no
 copy at all. | 
| ReadWriteCopier<T> | A helper  Copierimplementation that can be extended directly
 if the copying operation is the same irrespective of the action
 performed (read or write). | 
| SerializingCopier<T> | A helper copier implementation that performs the "copying" using  serialization. | 
copiers.