code: public TimerType<T> end(java.util.Date end)
     {
        if (end != null)
        {
           childNode.getOrCreate("end").text(XMLDate.toXMLFormat(end));
           return this;
        }
        return null;
     }
docs: Sets the <code>end</code> element
  @param end the value for the element <code>end</code>
  @return the current instance of <code>TimerType<T></code>