Create (TCachedDataStream)
Create (TGroupCachedDataStream)
Destroy (TGroupCachedDataStream)
pt
GetPosition (TCachedDataStream)
GetSize (TCachedDataStream)
Read (TGroupCachedDataStream)
Seek (TCachedDataStream)
SetPosition (TCachedDataStream)
SetSize64 (TCachedDataStream)
Write (TCachedDataStream)