pt 

BeginUpdate (TBlobProxyStream)

create (TBlobProxyStream)

pt 

DoChanged (TBlobProxyStream)

pt 

EndUpdate (TBlobProxyStream)

pt 

GetPosition (TBlobProxyStream)

pt 

GetSize (TBlobProxyStream)

Read (TBlobProxyStream)

Seek (TBlobProxyStream)

pt 

SetPosition (TBlobProxyStream)

pt 

SetSize (TBlobProxyStream)

Write (TBlobProxyStream)