n^2 loop in MarkupContainer?

[Meetesh Karia]

Hi all, I'm using DataView in wicket 1.3 and we have ~400 items that are 
returned by a data provider.  I'd expect the adding of the items to be 
rather quick but it turns out that it's not and it looks like the 
culprit might be MarkupContainer.put.  That method expands the children 
array 1 entry at a time which makes the loop of adding the items n^2.

Is there a good reason for this loop to be n^2 (memory conservation 
perhaps)?  Is there any easy way around it?

Thanks,
Meetesh