LoadableDetachableModel#load() called twice

[Warren Bell]

I have a ListChoice that I add a choice to. I do this in an
AjaxButton#onSubmit(...). The problem is that load() has been called
before onSubmit() and I have to call LoadableDetachableMode#detach()
and have load() called again. This seems like a waste to have load()
called twice in order to get the new choice added to the ListChoice. Is
there a better way of doing this?
 
Warren