public static function retrieveZoneSourceId()
{
$zone = null;
$context = null;
$vars = explode('/', $_SERVER['REQUEST_URI']);
$zone = $vars[ZONE_URL_INDEX];
if (isset($vars[ZONE_URL_INDEX + 1])) {
$context = $vars[ZONE_URL_INDEX + 1];
} else {
$context = 'SIF_Default';
}
Zone::setupZone($zone);
Zone::setupContext($context);
Zone::getZoneVersion();
}