public function getContinent($idSite, $period, $date, $segment = false)
{
$dataTable = $this->getDataTable(Archiver::COUNTRY_RECORD_NAME, $idSite, $period, $date, $segment);
$getContinent = array('Piwik\\Common', 'getContinent');
$dataTable->filter('GroupBy', array('label', $getContinent));
$dataTable->filter('ColumnCallbackReplace', array('label', __NAMESPACE__ . '\\continentTranslate'));
$dataTable->queueFilter('ColumnCallbackAddMetadata', array('label', 'code'));
return $dataTable;
}