[Papervision3D] where is updateAnimatedBitmaps() called in Effects/GreatWhite

[-a-]

I'd really appreciate some help to understand what's happening, Please.
In the old Phunky Branch the VideoStreamMaterial is drawn by the method
updateAnimatedBitmaps()within its superclass MovieMaterial. That method
does not exist in the Effects/GreatWhite version of PV3D 2.0. I know the logic flow
has changed, so where does this call happen in the new state of things?? 
Unlike in The Phunky , the GreatWhite/Effect does not have this method, so
how is the VideoStreamMaterial being drawn?? Is it actually being drawn??

a/