Wicket: On RadioChoice component, invoke form submit, what am I missing

[Brown, Berlin [GCG-PFS]]

There are some components in wicket that seem to be associated with a
form, but I can't get them to actually submit the form.
 
Or at least, I can't get them to submit the form, if I have a hierarchy
of FORM -> PANEL -> COMPONENT/RADIOCHOICE
 
For example, I can create a "submitlink" or button and those components
submit:
 
return new SubmitLink(id, form) {   
   @Override
   public void onSubmit() {
    this.setResponsePage(pageClass);
   }
  };
 
That works above.
 
I want to be able to perform a submit on a radio choice, on change. E.g.
 
new OnChangeHandler() {     
 
     @Override
     public void onChange(final Object sel) {      
      // On submission, submit back to form
      setResponsePage(Page.class);
     } 
 
// MY CONTAINER IS NOT A FORM BUT A CHILD OF A FORM (E.g. FORM -> PANEL
-> RADIOCHOICE
 
public RadioChoice addRadioGroup(final WebMarkupContainer container,
final Object modelObject, 
   final String groupName, final String propFieldName, final String []
optionsArr, final OnChangeHandler handler) {
 
  final RadioChoice radioGroupYesNo = new RadioChoice(groupName, new
PropertyModel(modelObject, propFieldName), Arrays.asList(optionsArr)) {
 
         @Override
   public boolean wantOnSelectionChangedNotifications() {   
    return (handler != null); /* When the handler is not null, enable on
change */
   }
   @Override
   public void onSelectionChanged(Object newSel) {
    if (handler != null) {     
     handler.onChange(newSel);
    } else {
     super.onSelectionChanged(newSel);
    }
   }   
  };    
  container.add(radioGroupYesNo);
  return radioGroupYesNo;
 }
 
With the code shown above, the page refreshes, but I want to submit the
form and do a page refresh.
 
I don't see where I could associate the form with the RadioChoice?

Does RadioChoice need to imlement IFormSubmittingComponent?
 
Berlin Brown