Protected Overridable MustOverride Function OnCallService( _
   ByVal currentStreamNumber As Integer, _
   ByVal state As TServiceState _
) As TStreamedData

Dim instance As ServiceStreamer(Of TStreamedData,TServiceState)
Dim currentStreamNumber As Integer
Dim state As TServiceState
Dim value As TStreamedData
 
value = instance.OnCallService(currentStreamNumber, state)

protected virtual abstract TStreamedData OnCallService( 
   int currentStreamNumber,
   TServiceState state
)

protected:
virtual abstract TStreamedData OnCallService( 
   int currentStreamNumber,
   TServiceState state
)