getWrappedModel and getChainedModel (Component.getInnerMostModel())

[Johan Compagner]

we have this code in Component:

protected final IModel getInnermostModel(final IModel model)
   {
       IModel nested = model;
       while (nested != null && nested instanceof IWrapModel)
       {
           final IModel next = ((IWrapModel)nested).getWrappedModel();
           if (nested == next)
           {
               throw new WicketRuntimeException("Model for " + nested + "
is self-referential");
           }
           nested = next;
       }
       return nested;
   }

we also have IChainingModel shouldn't we also test for that?
because çurrently the behavior is that we only test for WramModels to get to
the innermost model
but what is then the big difference with IChainingModel?

johan