public void rebuildHetero(StaplerRequest req, JSONObject formData, Collection<? extends Descriptor<T>> descriptors, String key) throws FormException, IOException {
        replaceBy(Descriptor.newInstancesFromHeteroList(req,formData,key,descriptors));
    }
public void rebuildHetero ( StaplerRequest req , JSONObject formData , Collection < ? extends Descriptor < T > > descriptors , String key ) throws FormException , IOException { replaceBy ( Descriptor . newInstancesFromHeteroList ( req , formData , key , descriptors ) ) ; }
Rebuilds the list by creating a fresh instances from the submitted form.

<p>
This version works with the {@code <f:hetero-list>} UI tag, where the user
is allowed to create multiple instances of the same descriptor. Order is also
significant.