code: private void paintStandardAction(final Action action, final String elementName,
  			final XmlStringBuilder xml) {
  		xml.appendTagOpen(elementName);
  		xml.appendAttribute("action", getActionTypeName(action.getActionType()));
  		xml.appendClose();
  		xml.appendTagOpen("ui:target");
  
  		SubordinateTarget target = action.getTarget();
  		if (target instanceof WComponentGroup<?>) {
  			xml.appendAttribute("groupId", target.getId());
  		} else {
  			xml.appendAttribute("id", target.getId());
  		}
  
  		xml.appendEnd();
  		xml.appendEndTag(elementName);
  	}
docs: Paint a standard action - where a single item or single group is targeted.
  
  @param action the action to paint
  @param elementName the enclosing element name ("ui:onFalse" or "ui:onTrue").
  @param xml the output response