Problem with WithBindings sample code?

FROM : David Carlisle
DATE : Fri Nov 23 17:36:58 2007

In the WithBindings samplecode example, I don't see any bindings when 
using Leopard Interface Builder to look at MyDocument.nib My Array 
Controller Bindings.  But if I look at the SimpleBindingsAdoption 
sample code example at MyDocument.nib Object Controller Bindings, I 
see Content Object (File's Owner.track).  So in the WithBindings case, 
shouldn't I be seeing Content Array (File's Owner.collection)?