ll of the files of a given set of
 extensions in the given location. If the location is a file, it is
 returned as the only element of the array. If the location is a
 directory, it is scanned for matching files.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>location</code> - the location to scan for files.</dd><dd><code>extensions</code> - an array of extension that are to match in the
        directory search.</dd>
<dt><span class="strong">Returns:</span></dt><dd>an array of URLs of 