Public Overridable Function onCreateEventSubscription( _
   ByVal active As Boolean, _
   ByVal bufferTime As Integer, _
   ByVal maxSize As Integer, _
   ByVal clientSubscription As Integer, _
   ByRef revisedBufferTime As Integer, _
   ByRef revisedMaxSize As Integer, _
   ByRef evs As EventSubscription _
) As Integer

public virtual int onCreateEventSubscription( 
   bool active,
   int bufferTime,
   int maxSize,
   int clientSubscription,
   out int revisedBufferTime,
   out int revisedMaxSize,
   out EventSubscription evs
)