This class contains a pointer to an instance of ZkPrngClientImpl to avoid link problem whan updating
the ZKYarrow dll. This class should be used as a base class for the class that will implement the
input for each platform.
Actually, there's only an implementation of the input for the
Win32 platform
Implementation class to which the ZKPrngClient forwards its calls. This architecture is used to avoid updating a lot of dlls when something changes. This is the class that really deals with Yarrow.
Take a look at the Win32 specific implementation.