public function GetMetadata($courseId, $versionId, $scope, $format)
{
$enum = new Enum();
$request = new ServiceRequest($this->_configuration);
$params = array('courseid' => $courseId);
if (isset($versionId) && $versionId != 0) {
$params['versionid'] = $versionId;
}
$params['scope'] = $enum->getMetadataScope($scope);
$params['mdformat'] = $enum->getDataFormat($format);
$request->setMethodParams($params);
$response = $request->CallService("rustici.course.getMetadata");
// Return the subset of the xml starting with the top <object>
return $response;
}