xpiration occurs after a specified duration, and whose subsequent expirations
 occur after a specified interval.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>initialDuration</code> - The number of milliseconds that must elapse before the first timer expiration notification.</dd>
<dd><code>intervalDuration</code> - The number of milliseconds that must elapse between timer expiration notifications.
 Expiration notifications are scheduled relative to the time of the first expiratio