/** @see CollectionValueModelWrapper#engageModel() */
protected void engageModel() {
super.engageModel();
// synch our cache *after* we start listening to the wrapped collection,
// since its value might change when a listener is added;
// the following will trigger the firing of a number of unnecessary events
// (since we don't have any listeners yet),
// but it reduces the amount of duplicate code
this.addComponentSources((Iterator) this.collectionHolder.getValue());
}
