URL are prepended.
       Otherwise, the host, port, and path are prepended.
             </p><span class="label">Parameters</span>
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<td width="20px"></td><td><code><span class="label">rootURL</span>:String</code> &mdash; URL used to resolve the URL specified by the <code>url</code> parameter, if <code>url</code> is relative.
       </td>
</tr>
<tr>
<td class="paramSpacer">&nbsp;</td>
</tr>
<tr>
<td width="20px"></td><td><code><span class="label">url</s