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