code: private void paintInGroupAction(final Action action, final String elementName,
  			final XmlStringBuilder xml) {
  		xml.appendTagOpen(elementName);
  		xml.appendAttribute("action", getActionTypeName(action.getActionType()));
  		xml.appendClose();
  		xml.appendTagOpen("ui:target");
  		xml.appendAttribute("groupId", action.getTarget().getId());
  		xml.appendAttribute("id", ((AbstractAction) action).getTargetInGroup().getId());
  		xml.appendEnd();
  		xml.appendEndTag(elementName);
  	}
docs: Paint an inGroup action - where a single item is being targeted out of a group of items.
  
  @param action the action to paint
  @param elementName the enclosing element name ("ui:onFalse" or "ui:onTrue").
  @param xml the output response