code: public UIRadioButton setSelected()
  	{
  		UIRadioButton rb = getSelected(name);
  		if (rb != null)
  			rb.selected = false;
  		selected = true;
  		return this;
  	}
docs: Sets state of this {@link UIRadioButton} to selected.<br>
  If a radio button with the same name is currently selected, unselects it.<br>
  Does not fire {@link SelectEvent}.
  
  @return the UI radio button